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.

rdoc.cap

@@ -0,0 +1,28 @@
+{
+    "rdocCaptureSettings": 1,
+    "settings": {
+        "autoStart": false,
+        "commandLine": "/media/diego/Data/Projects/live-wallpaper/samples/test.lua",
+        "environment": [
+        ],
+        "executable": "/home/diego/Projects/live-wallpaper/build/live-wallpaper",
+        "inject": false,
+        "numQueuedFrames": 1,
+        "options": {
+            "allowFullscreen": true,
+            "allowVSync": true,
+            "apiValidation": false,
+            "captureAllCmdLists": false,
+            "captureCallstacks": false,
+            "captureCallstacksOnlyDraws": false,
+            "debugOutputMute": true,
+            "delayForDebugger": 0,
+            "hookIntoChildren": false,
+            "refAllResources": false,
+            "softMemoryLimit": 0,
+            "verifyBufferAccess": false
+        },
+        "queuedFrameCap": 200,
+        "workingDir": ""
+    }
+}