Add flutter format and other checks to CI workflow

Author: danrmiller

.github/workflows/check.yaml

@@ -0,0 +1,28 @@
+name: Checks
+
+on:
+  pull_request:
+
+jobs:
+  check:
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: REUSE Compliance Check
+        uses: fsfe/reuse-action@v6
+
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: 'stable'
+          flutter-version: '3.38.1'
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Verify Dart formatting
+        run: dart format --output=none --set-exit-if-changed .
+
+      - name: Analyze Dart project source
+        run: flutter analyze

.github/workflows/test.yaml

@@ -3,14 +3,14 @@ name: Test
 on: [pull_request]
 jobs:
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Prepare repository
         uses: actions/checkout@v4
       - name: Install Flutter 
         uses: subosito/flutter-action@v2 
         with:
-          flutter-version: '3.19.6'
+          flutter-version: '3.38.1'
           channel: 'stable'
       - name: Setup | Rust
         uses: dtolnay/rust-toolchain@stable