Add CI workflow for testing Go project

On every push or pull request that modifies relevant files:

- Build application and upload the binary as a workflow artifact for local testing
- Run unit tests

Author: per1234

.github/workflows/test-go.yml

@@ -0,0 +1,72 @@
+name: Test Go
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/test-go.yml"
+      - "Taskfile.yml"
+      - "**.go"
+  pull_request:
+    paths:
+      - ".github/workflows/test-go.yml"
+      - "Taskfile.yml"
+      - "**.go"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.14"
+
+      - name: Install Taskfile
+        uses: arduino/actions/setup-taskfile@master
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Configure Git for go get access to private repo
+        run: git config --global url."https://${{ secrets.REPO_SCOPE_TOKEN }}:[email protected]/".insteadOf "https://github.com/"
+
+      - name: Build application
+        run: task go:build
+
+      - name: Save binary as workflow artifact
+        uses: actions/upload-artifact@v2
+        with:
+          if-no-files-found: error
+          path: libraries-repository-engine
+          name: libraries-repository-engine
+
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.14"
+
+      - name: Install Taskfile
+        uses: arduino/actions/setup-taskfile@master
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          version: 3.x
+
+      - name: Configure Git for go get access to private repo
+        run: git config --global url."https://${{ secrets.REPO_SCOPE_TOKEN }}:[email protected]/".insteadOf "https://github.com/"
+
+      - name: Run tests
+        run: task go:test