Add workflow to test on ubuntu-22.04, rename swift-linux.yml -> ubuntu-latest

Author: valeriyvan

.github/workflows/swift-ubuntu-22.04.yml

@@ -0,0 +1,40 @@
+name: Build Linux
+
+on:
+  push:
+    branches-ignore:
+      - 'gh-pages'
+  pull_request:
+    branches-ignore:
+      - 'gh-pages'
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-22.04
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install Dependencies
+      run: |
+        sudo apt update && \
+        sudo apt install -y libgtk-4-dev libgtk-3-dev clang
+    - name: Build
+      run: |
+        swift build --target GtkCodeGen && \
+        cd Examples && \
+        swift build --target SwiftCrossUI && \
+        swift build --target GtkBackend && \
+        swift build --target Gtk3Backend && \
+        swift build --target CounterExample && \
+        swift build --target ControlsExample && \
+        swift build --target RandomNumberGeneratorExample && \
+        swift build --target WindowingExample && \
+        swift build --target GreetingGeneratorExample && \
+        swift build --target NavigationExample && \
+        swift build --target SplitExample && \
+        swift build --target StressTestExample && \
+        swift build --target SpreadsheetExample && \
+        swift build --target NotesExample && \
+        swift build --target GtkExample
+    - name: Test
+      run: swift test --test-product swift-cross-uiPackageTests