chore: Add CI

.github/workflows/build.yml

@@ -0,0 +1,74 @@
+name: build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  # BEGIN LINTING STAGE
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: main
+      - uses: bluefireteam/melos-action@v3
+      - run: melos run format-check
+
+  analyze:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: main
+      - uses: bluefireteam/melos-action@v3
+      - name: "Analyze with latest stable"
+        uses: invertase/github-action-dart-analyzer@v3
+        with:
+          fatal-infos: true
+
+  markdown-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - run: npm install -g markdownlint-cli
+      - run: markdownlint . -p .markdownlintignore -c .markdownlint.yaml
+
+  dcm:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: main
+      - uses: bluefireteam/melos-action@v3
+      - name: Install DCM
+        uses: CQLabs/setup-dcm@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Run DCM
+        run: dcm analyze .
+  # END LINTING STAGE
+
+  # BEGIN TESTING STAGE
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: main
+          cache: true
+      - uses: bluefireteam/melos-action@v3
+      - name: Run tests
+        run: melos test
+  # END TESTING STAGE