Add analyser which checks uniqueness of translation keys in a single file #176

	on: [push, pull_request]
	name: Continuous Integration

	jobs:
	test:
	name: Test
	runs-on: ${{matrix.os.fullname}}

	strategy:
	fail-fast: false
	matrix:
	os:
	- { prettyname: Windows, fullname: windows-latest }
	- { prettyname: macOS, fullname: macos-latest }
	- { prettyname: Linux, fullname: ubuntu-latest }

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

	- name: Install .NET 6.0.x
	uses: actions/setup-dotnet@v1
	with:
	dotnet-version: "6.0.x"

	- name: Build
	run: dotnet build

	- name: Test
	run: dotnet test --logger "trx;LogFileName=TestResults-${{matrix.os.prettyname}}.trx"
	shell: pwsh

	# Attempt to upload results even if test fails.
	# https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#always
	- name: Upload Test Results
	uses: actions/upload-artifact@v2
	if: ${{ always() }}
	with:
	name: test-results-${{matrix.os.prettyname}}
	path: ${{github.workspace}}/LocalisationAnalyser.Tests/TestResults/TestResults-${{matrix.os.prettyname}}.trx

Provide feedback