feat(gst): enhance GStreamer integration with new modules and improved API

This commit introduces significant enhancements to the GStreamer integration by:
- Adding new modules for bins, caps, elements, pads, and plugins
- Implementing a more ergonomic API with helper methods like play(), pause(), ready()
- Adding support for various GStreamer plugins including app, autodetect, playback, and videoconvertscale
- Improving error handling with better context attachment
- Updating dependencies to latest versions including gstreamer-video 0.24.4
- Refactoring existing code to use modern Rust patterns and features

gst/Cargo.toml

@@ -8,8 +8,12 @@ edition = "2021"
 [dependencies]
 error-stack = "0.6"
 glib = "0.21.5"
-gstreamer = "0.24.4"
-gstreamer-app = "0.24.4"
+gstreamer = { version = "0.24.4", features = ["v1_18"] }
+gstreamer-app = { version = "0.24.4", features = ["v1_18"] }
+gstreamer-video = { version = "0.24.4", features = ["v1_18"] }
 thiserror = "2.0"
-tracing = "0.1"
+tracing = { version = "0.1", features = ["log"] }
 wgpu = { version = "27.0.1", default-features = false }
+
+[dev-dependencies]
+tracing-subscriber = "0.3.22"