Add Linux workflow

.github/workflows/android.yml

@@ -3,6 +3,7 @@ on:
   push:
     branches: ["*"]
     paths-ignore:
+      - '.github/workflows/linux.yml'
       - '.github/workflows/web.yml'
       - '.github/workflows/windows.yml'
       - 'ios/**'

.github/workflows/linux.yml

@@ -0,0 +1,31 @@
+name: Linux Build
+on:
+  push:
+    branches: ["*"]
+    paths-ignore:
+      - '.github/workflows/android.yml'
+      - '.github/workflows/web.yml'
+      - '.github/workflows/windows.yml'
+      - 'android/**'
+      - 'ios/**'
+      - 'macos/**'
+      - 'web/**'
+      - 'windows/**'
+      - '.gitignore'
+      - '.gitmodules'
+      - 'README.md'
+      - 'LICENSE'
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out
+        uses: actions/checkout@v4
+      - name: Setup flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+      - name: Install dependencies
+        run: sudo apt-get update && sudo apt-get install -y libgtk-3-dev liblzma-dev libstdc++-12-dev ninja-build
+      - name: Build
+        run: flutter build linux --release

.github/workflows/web.yml

@@ -4,6 +4,7 @@ on:
     branches: ["*"]
     paths-ignore:
      - '.github/workflows/android.yml'
+     - '.github/workflows/linux.yml'
      - '.github/workflows/windows.yml'
      - 'android/**'
      - 'ios/**'

.github/workflows/windows.yml

@@ -4,6 +4,7 @@ on:
     branches: ["*"]
     paths-ignore:
      - '.github/workflows/android.yml'
+     - '.github/workflows/linux.yml'
      - '.github/workflows/web.yml'
      - 'android/**'
      - 'ios/**'