gh: Enable builds/tests/linting through github actions

.github/dependabot.yml

@@ -10,3 +10,8 @@ updates:
   schedule:
     interval: daily
   open-pull-requests-limit: 10
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10

.github/workflows/macadam.yml

@@ -0,0 +1,71 @@
+name: Build
+on:
+  push:
+  pull_request: {}
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false
+      matrix:
+        go:
+        - oldstable
+        - stable
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: >-
+          WORKAROUND: Fetch tags that points to the revisions
+          checked-out(actions/checkout#1467)
+        run: |-
+          git fetch --tags --force
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Build
+        run: make cross
+      - name: Upload macadam artifact
+        if: matrix.go == 'stable'
+        uses: actions/upload-artifact@v4
+        with:
+          name: amd64 linux binary
+          path: "./bin/macadam-linux-amd64"
+  test:
+    needs: build
+    strategy:
+      matrix:
+        os:
+        - ubuntu-22.04
+        - macos-13
+        - windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'go.mod'
+      - name: Test
+        run: make test
+  lint:
+    needs: build
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'go.mod'
+      - name: Run 'make check'
+        run: make check