.github: build level-editor on linux

.github/workflows/main.yml

@@ -35,6 +35,8 @@ jobs:
             sudo apt-get update
             sudo apt-get install mesa-common-dev libgl1-mesa-dev libpulse-dev libxrandr-dev
             sudo apt-get install libgtk-3-dev
+            sudo add-apt-repository ppa:vala-team
+            sudo apt-get install valac libgee-0.8-dev
         - name: linux-make-debug64
           run: |
             make linux-debug64 MAKE_JOBS=2
@@ -53,6 +55,12 @@ jobs:
         - name: linux-test-release64
           run: |
             ./build/linux64/bin/crown-release --run-unit-tests
+        - name: linux-make-level-editor-debug64
+          run: |
+            make level-editor-linux-debug64 MAKE_JOBS=2
+        - name: linux-make-level-editor-release64
+          run: |
+            make level-editor-linux-release64 MAKE_JOBS=2
     windows:
         runs-on: windows-latest
         steps: