Add Flex support. Clean Makefile. Clean NBGL main menu code. #26

	name: CI

	on:
	workflow_dispatch:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	- develop


	jobs:
	job_build:
	name: Compilation
	strategy:
	matrix:
	include:
	- model: nanos
	SDK: "$NANOS_SDK"
	- model: nanox
	SDK: "$NANOX_SDK"
	- model: nanosp
	SDK: "$NANOSP_SDK"
	- model: stax
	SDK: "$STAX_SDK"
	- model: flex
	SDK: "$FLEX_SDK"

	runs-on: ubuntu-latest

	container:
	image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder:latest

	steps:
	- name: Clone
	uses: actions/checkout@v2

	- name: Build
	run: \|
	make COIN=zcash && mv bin/ zcash-bin/

	- name: Upload Zcash app binary
	uses: actions/upload-artifact@v2
	with:
	name: zcash-app
	path: zcash-bin

	job_test:
	name: Tests
	strategy:
	matrix:
	include:
	- model: nanos
	- model: nanox
	- model: nanosp
	- model: stax
	- model: flex

	needs: job_build
	runs-on: ubuntu-latest

	container:
	image: ghcr.io/ledgerhq/speculos:latest
	ports:
	- 1234:1234
	- 9999:9999
	- 40000:40000
	- 41000:41000
	- 42000:42000
	- 43000:43000
	options: --entrypoint /bin/bash

	steps:
	- name: Clone
	uses: actions/checkout@v2

	- name: Download ZCash app binary
	uses: actions/download-artifact@v2
	with:
	name: zcash-app
	path: tests/zcash-bin

	- name: Download Zcash app binary
	uses: actions/download-artifact@v2
	with:
	name: zcash-app
	path: tests/zcash-bin

	- name: Run tests
	run: \|
	cd tests && pip install -r requirements.txt && SPECULOS=/speculos/speculos.py pytest --model=${{ matrix.model }}

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