Add GStreamer support for video textures and update related files

- Introduced GStreamerTexture class for handling video frames.
- Updated texture loading methods to include FromGStreamer.
- Modified effect handling to support GStreamer textures.
- Updated launch configuration and added new sample scripts.

.vscode/launch.json

@@ -7,7 +7,7 @@
             "request": "launch",
             "program": "${workspaceFolder}/build/debug/live-wallpaper",
             "args": [
-                "${workspaceFolder}/samples/dry_rocky_gorge.lua"
+                "${workspaceFolder}/samples/test.lua"
             ],
             "cwd": "${workspaceFolder}",
             "environment": [],