fix: adapt CI/CD for Gitea compatibility

- Replace upload/download-artifact v4 with v3 (v4 not supported on Gitea)
- Fix ObjectsPool::allocateNew() usage (returns void, not bool)
- Add cmake and build-essential to dependencies
- Update release workflow to use softprops/action-gh-release

.github/workflows/appimage.yml

@@ -59,7 +59,7 @@ jobs:
           UPDATE_INFO: gh-releases-zsync|MihailRis|VoxelEngine-Cpp|latest|*x86_64.AppImage.zsync
         with:
           recipe: dev/AppImageBuilder.yml
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v3
         with:
           name: AppImage
           path: './*.AppImage*'

.github/workflows/cmake.yml

@@ -68,7 +68,7 @@ jobs:
       run: ctest --test-dir ${{github.workspace}}/build
     - name: Upload artifacts
       if: ${{ inputs.upload_artifacts }}
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v3
       with:
         name: VoxelEngine
         path: |

.github/workflows/macos.yml

@@ -55,7 +55,7 @@ jobs:
           hdiutil create VoxelEngineMacApp.dmg -volname "VoxelEngine" -srcfolder VoxelEngineDmgContent -ov -format UDZO
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: VoxelEngineMacOs
           path: VoxelEngineMacApp.dmg

.github/workflows/release.yml

@@ -44,7 +44,7 @@ jobs:
       with:
         ref: ${{ env.BRANCH_NAME }}
     - name: Download Build Artifact
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v3
       with:
         path: ./artifacts
     - name: Show Artifacts

.github/workflows/windows-clang.yml

@@ -64,7 +64,7 @@ jobs:
           cp build/*.dll packaged/
           cp -r build/res/* packaged/res/
           mv packaged/VoxelEngine.exe packaged/VoxelCore.exe
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v3
         with:
           name: Windows-Build
           path: 'packaged/*'

.github/workflows/windows.yml

@@ -47,7 +47,7 @@ jobs:
           cp C:/Windows/System32/msvcp140.dll packaged/msvcp140.dll
           mv packaged/VoxelEngine.exe packaged/VoxelCore.exe
         working-directory: ${{ github.workspace }}
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v3
         with:
           name: Windows-Build
           path: 'packaged/*'