ci: add github export action

.github/workflows/build_all.yml

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+name: Build all presets
+
+on:
+  # Used when triggering this workflow from another workflow
+  workflow_call:
+    inputs:
+      debug-mode:
+        description: "Whether to export the preset in debug mode. Defaults to false"
+        required: false
+        type: boolean
+        default: false
+
+jobs:
+  build_all:
+    name: Build all presets
+    strategy:
+      matrix:
+        platform:
+          - godot-export-preset: "Linux/X11"
+            file-extension: zip
+          - godot-export-preset: "Web"
+            file-extension: zip
+          - godot-export-preset: "Windows Desktop"
+            file-extension: exe
+
+    uses: ./.github/workflows/build_single_preset.yml
+    with:
+      godot-export-preset: ${{ matrix.platform.godot-export-preset }}
+      file-extension: ${{ matrix.platform.file-extension }}
+      debug-mode: ${{ inputs.debug-mode }}

.github/workflows/build_single_preset.yml

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+name: Build one specific preset
+
+on:
+  # Used when triggering this workflow from another workflow
+  workflow_call:
+    inputs:
+      debug-mode:
+        description: "Whether to export the preset in debug mode. Defaults to true"
+        required: false
+        type: boolean
+        default: true
+      export-file-name:
+        description: "Name of the file that will be generated from the export"
+        required: false
+        type: string
+        default: ${{ vars.ARTIFACT_NAME }}
+      file-extension:
+        description: "Extension to export to"
+        required: true
+        type: string
+      godot-export-preset:
+        description: "Name of the Godot export preset to use to export the project"
+        required: true
+        type: string
+    outputs:
+      artifact-name:
+        description: "Name of the uploaded artifact"
+        value: ${{ jobs.build.outputs.artifact-name }}
+
+env:
+  GODOT_VERSION: 4.2.1
+
+jobs:
+  build:
+    name: ${{ inputs.godot-export-preset }}
+    runs-on: ubuntu-latest
+    container:
+      image: barichello/godot-ci:4.2.1
+    outputs:
+      artifact-name: ${{ steps.add-artifact-name.outputs.artifact-name }}
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Setup
+      run: |
+        mkdir -v -p ~/.local/share/godot/export_templates
+        mv /root/.local/share/godot/templates/${GODOT_VERSION}.stable ~/.local/share/godot/export_templates/${GODOT_VERSION}.stable
+
+    - name: Build ${{ inputs.godot-export-preset }}
+      run: |
+        mkdir -v -p build/${{ inputs.godot-export-preset }}
+        godot --headless --verbose --export-release "${{ inputs.godot-export-preset }}" ./build/${{ inputs.godot-export-preset }}/${{ inputs.export-file-name }}.zip
+
+    - name: Upload Artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ vars.ARTIFACT_NAME }}-${{ inputs.godot-export-preset }}-${{ github.sha }}
+        path: ./build/${{ inputs.godot-export-preset }}
+        if-no-files-found: error
+
+    - name: Add artifact name to output
+      id: add-artifact-name
+      run: echo "artifact-name=${{ vars.ARTIFACT_NAME }}-${{ inputs.godot-export-preset }}-${{ github.sha }}" >> "$GITHUB_OUTPUT"

.github/workflows/main.yml

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+name: Release to production
+
+on:
+  push
+
+jobs:
+  build_all:
+    name: Build
+    uses: ./.github/workflows/build_all.yml
+    with:
+      debug-mode: false

.github/workflows/release_all.yml

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+name: Release an artifact
+
+on:
+  # Used when triggering this workflow from another workflow
+  workflow_call:
+    inputs:
+      web-artifact-name:
+        required: true
+        type: string
+      linux-artifact-name:
+        required: true
+        type: string
+      windows-artifact-name:
+        required: true
+        type: string
+
+jobs:
+  release_to_itch:
+    name: ${{ inputs.release-channel }}
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/download-artifact@v4
+      id: download-artifact
+      name: Download artifact to release
+      with:
+        name: ${{ inputs.artifact-name }}
+
+    - uses: manleydev/[email protected]
+      name: Upload artifact to Itch.io ${{ inputs.release-channel }} channel
+      env:
+        BUTLER_CREDENTIALS: ${{ secrets.BUTLER_CREDENTIALS }}
+        CHANNEL: ${{ inputs.release-channel }}
+        ITCH_GAME: ${{ secrets.ITCH_GAME }}
+        ITCH_USER: ${{ secrets.ITCH_USER }}
+        PACKAGE: ${{ steps.download-artifact.outputs.download-path }}
+        VERSION: ${{ github.ref_name }}
+
+jobs:
+  release_all:
+    name: Release all artifacts
+    strategy:
+      matrix:
+        platform:
+          - release-channel: web-production
+            artifact-name: ${{ inputs.web-artifact-name }}
+          - release-channel: linux-production
+            artifact-name: ${{ inputs.linux-artifact-name }}
+          - release-channel: windows-production
+            artifact-name: ${{ inputs.windows-artifact-name }}
+
+    uses: ./.github/workflows/release_single.yml
+    with:
+      release-channel: ${{ matrix.platform.release-channel }}
+      artifact-name: ${{ matrix.platform.artifact-name }}

.github/workflows/release_single.yml

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+name: Release an artifact
+
+on:
+  # Used when triggering this workflow from another workflow
+  workflow_call:
+    inputs:
+      release-channel:
+        required: true
+        type: string
+      artifact-name:
+        required: true
+        type: string
+
+jobs:
+  release_to_itch:
+    name: ${{ inputs.release-channel }}
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/download-artifact@v4
+      id: download-artifact
+      name: Download artifact to release
+      with:
+        name: ${{ inputs.artifact-name }}
+
+    - uses: manleydev/[email protected]
+      name: Upload artifact to Itch.io ${{ inputs.release-channel }} channel
+      env:
+        BUTLER_CREDENTIALS: ${{ secrets.BUTLER_CREDENTIALS }}
+        CHANNEL: ${{ inputs.release-channel }}
+        ITCH_GAME: ${{ secrets.ITCH_GAME }}
+        ITCH_USER: ${{ secrets.ITCH_USER }}
+        PACKAGE: ${{ steps.download-artifact.outputs.download-path }}
+        VERSION: ${{ github.ref_name }}