[Upstream] Update to Godot beta 3.

Update build targets.
Move release script out of CI yaml.
Disable debug CI builds for Godot 3.x since they are mostly used for
debugging the extension itself.

.github/workflows/build_release.yml

@@ -59,7 +59,7 @@ jobs:
             arch: 'x86_64'
             gdnative_flags: 'ios_arch=x86_64'
             sconsflags: 'ios_simulator=true'
-            os: 'macos-latest'
+            os: 'macos-11'
             cache-name: ios-x86_64-simulator
           - platform: ios
             arch: 'arm64'
@@ -162,21 +162,17 @@ jobs:
           scons --version
           cmake --version
 
-      - name: Compile Extension - debug - ${{ matrix.platform }} - ${{ matrix.arch }}
+      - name: Compile Extension - template_debug - ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons target=debug generate_bindings=yes
+          scons target=template_debug generate_bindings=yes
 
-      - name: Compile GDNative - debug - ${{ matrix.platform }} - ${{ matrix.arch }}
+      - name: Compile Extension - template_release - ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons target=debug generate_bindings=yes ${{ matrix.gdnative_flags }} godot_version=3
-
-      - name: Compile Extension - release - ${{ matrix.platform }} - ${{ matrix.arch }}
-        run: |
-          scons target=release
+          scons target=template_release
 
       - name: Compile GDNative - release ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons target=release ${{ matrix.gdnative_flags }} godot_version=3
+          scons target=release generate_bindings=yes ${{ matrix.gdnative_flags }} godot_version=3
 
       - uses: actions/upload-artifact@v3
         with:
@@ -208,28 +204,15 @@ jobs:
           cp deps/libdatachannel/deps/plog/LICENSE artifacts/LICENSE.plog
 
       - name: Package artifacts for release
+        env:
+          DESTINATION: "release"
         run: |
           mkdir release
-          cd release
 
-          ls -R
+          VERSION="extension" TYPE="webrtc" ./misc/scripts/package_release.sh
+          VERSION="gdnative" TYPE="webrtc" ./misc/scripts/package_release.sh
 
-          for version in extension gdnative
-          do
-            for name in webrtc webrtc_debug
-            do
-              destdir="${version}/${name}"
-              mkdir -p ${destdir}/lib
-              find ../artifacts -wholename "*/${destdir}/lib/*" | xargs cp -t ${destdir}/lib/
-              find ../artifacts -wholename "*/${destdir}/${name}.tres" -or -wholename "*/${destdir}/${name}.gdextension" | head -n 1 | xargs cp -t ${destdir}/
-              find ../artifacts -wholename "*/LICENSE*" | xargs cp -t ${destdir}/
-              cd ${version}
-              zip -r ../godot-${version}-${name}.zip ${name}
-              cd ..
-            done
-          done
-
-          ls -R
+          ls -R release
 
       - uses: actions/upload-artifact@v3
         with: