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.

src/effect.cpp

@@ -9,6 +9,7 @@
 #include "globals.h"
 
 #include "texture.h"
+#include "gstreamer_texture.h"
 
 GLuint Effect::g_dummyVAO = 0;
 
@@ -107,16 +108,18 @@ GLuint Effect::GetUniformLocation(const std::string& name)
     return location;
 }
 
-void Effect::SetSampler(const std::string &name, GLuint textureUnit)
+void Effect::SetTexture(const std::string &name, const Texture& texture, size_t textureUnit)
 {
-    glUniform1i(GetUniformLocation(name), textureUnit);
-}
-
-void Effect::SetTexture(const std::string &name, const Texture &texture, size_t textureUnit)
-{
-    texture.Bind();
     glActiveTexture(GL_TEXTURE0 + static_cast<GLuint>(textureUnit));
-    SetSampler(name, static_cast<GLuint>(textureUnit));
+    texture.Bind();
+    
+    GStreamerTexture* gstTexture = dynamic_cast<GStreamerTexture*>(const_cast<Texture*>(&texture));
+    if (gstTexture) {
+        // For GStreamerTexture, we need to call Update() to upload the latest frame data
+        gstTexture->Update();
+    }
+
+    glUniform1i(GetUniformLocation(name), static_cast<GLint>(textureUnit));
 }
 
 void Effect::SetFloat(const std::string &name, float value)