[Github workflow] Add new tag on version.py update (#685)

* Add release workflow

.github/workflows/changelog.yml

@@ -0,0 +1,37 @@
+---
+## Workflow to check CHANGELOG was updated when version gets updated in share/version.py
+name: changelog
+
+on:
+  pull_request:
+    paths:
+      - 'share/version.py'
+
+jobs:
+
+  changelog:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+
+      - uses: actions/checkout@v4
+
+      - name: Get version number
+        shell: bash
+        run: |
+          VERSION=$(grep -oE '[0-9]+\.[0-9]+\.[0-9]+(\-[a-zA-Z]+[0-9]+)?' share/version.py)
+          echo "VERSION=${VERSION}" >> $GITHUB_ENV
+          echo "::notice::ESF version is $VERSION."
+
+      - name: Check changelog
+        shell: bash
+        run: |
+          first_line=$(awk 'NR==1' CHANGELOG.md)
+
+          if [[ $first_line != *" v${{ env.VERSION }} "* ]]; then
+            error="CHANGELOG should contain the new version in its first line, like this ' v1.1.1 '."
+            reminder="Do not forget to add space before and after the version in the CHANGELOG first line."
+            echo "::error::$error $reminder"
+            exit 1
+          fi

.github/workflows/release.yml

@@ -0,0 +1,41 @@
+---
+## Workflow to create a new git tag if version.py variable version gets updated
+name: release
+
+permissions:
+  contents: write # write permission is required to create a GitHub release
+
+on:
+  push:
+    branches:
+      - 'main'
+    paths:
+      - 'share/version.py'
+
+jobs:
+
+  release:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+
+    steps:
+
+    - uses: actions/checkout@v4
+
+    - name: Get version number
+      shell: bash
+      run: |
+        VERSION=$(grep -oE '[0-9]+\.[0-9]+\.[0-9]+(\-[a-zA-Z]+[0-9]+)?' share/version.py)
+        echo "VERSION=${VERSION}" >> $GITHUB_ENV
+        echo "::notice::ESF version is $VERSION."
+
+    - name: Create tag
+      uses: actions/github-script@v7
+      with:
+        script: |
+          github.rest.git.createRef({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            ref: 'refs/tags/lambda-v' + ${{ env.VERSION }},
+            sha: context.sha
+          })