chore: add support for build automation (#5)

This PR seeks to solve #2.

It adds a Makefile that can build, test, lint and package the code and the Forgejo workflows needed to automate the build. In addition, it resolves various issues highlighted by the linter.

Reviewed-on: #5
Co-authored-by: Emmanuel BENOÎT <tseeker@nocternity.net>
Co-committed-by: Emmanuel BENOÎT <tseeker@nocternity.net>

.forgejo/workflows/release.yaml

@@ -0,0 +1,52 @@
+name: Build and upload project release
+
+on:
+  create:
+    tags: [ v* ]
+
+jobs:
+
+  release:
+    runs-on: debian-12
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+    -
+      name: Checkout repo
+      uses: actions/checkout@v4
+    -
+      name: Extract Go version
+      id: go-version
+      run: |
+        sed '/^go /!d; s/go /version=/' go.mod >>"$GITHUB_OUTPUT"
+    -
+      name: Extract release notes
+      id: release-notes
+      run: |
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
+        TAG_DATA="$(git tag -l --format '%(contents:body)' "${GITHUB_REF#refs/tags/}")"
+        TAG_DATA="${TAG_DATA//'%'/'%25'}"
+        TAG_DATA="${TAG_DATA//$'\n'/'%0A'}"
+        TAG_DATA="${TAG_DATA//$'\r'/'%0D'}"
+        echo "::set-output name=content::${TAG_DATA}"
+    -
+      name: Setup Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ steps.go-version.outputs.version }}
+    -
+      name: Run tests
+      run: |
+        make test
+    -
+      name: Build binaries
+      run: |
+        make dist-all
+    -
+      name: Upload release
+      uses: actions/forgejo-release@v1
+      with:
+        direction: upload
+        name: binaries
+        release-dir: dist/release
+        release-notes: ${{ steps.release-notes.outputs.content }}
+        token: ${{ secrets.FORGEJO_TOKEN }}

.forgejo/workflows/tests.yaml

@@ -0,0 +1,65 @@
+name: Run tests and linters
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+jobs:
+
+  test:
+    runs-on: debian-12
+    steps:
+    -
+      name: Checkout repo
+      uses: actions/checkout@v4
+    -
+      name: Setup Go
+      uses: actions/setup-go@v5
+      with:
+        go-version-file: go.mod
+        cache-dependency-path: |
+          go.sum
+          tools/go.sum
+    -
+      name: Run tests
+      run: |
+        make test
+
+  lint:
+    runs-on: debian-12
+    steps:
+    -
+      name: Checkout repo
+      uses: actions/checkout@v4
+    -
+      name: Setup Go
+      uses: actions/setup-go@v5
+      with:
+        go-version-file: go.mod
+        cache-dependency-path: |
+          go.sum
+          tools/go.sum
+    -
+      name: Run linters
+      run: |
+        make lint
+
+  build:
+    runs-on: debian-12
+    steps:
+    -
+      name: Checkout repo
+      uses: actions/checkout@v4
+    -
+      name: Setup Go
+      uses: actions/setup-go@v5
+      with:
+        go-version-file: go.mod
+        cache-dependency-path: |
+          go.sum
+          tools/go.sum
+    -
+      name: Build binaries
+      run: |
+        make build