Create main CI (#2)

Author: danirabbit

.github/workflows/main.yml

@@ -0,0 +1,39 @@
+name: CI
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        version: [stable, unstable, development-target]
+    container:
+      image: ghcr.io/elementary/docker:${{ matrix.version }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Dependencies
+        run: |
+          apt update
+          apt install -y meson gobject-introspection libgirepository1.0-dev libgtk-4-dev valac
+      - name: Build
+        env:
+          DESTDIR: out
+        run: |
+          meson setup build
+          ninja -C build install
+
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: elementary/actions/vala-lint@master