feat: Added iced_video_player

crates/iced_video_player/README.md

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+# Iced Video Player Widget
+
+Composable component to play videos in any Iced application built on the excellent GStreamer library.
+
+<img src=".media/screenshot.png" width="50%" />
+
+## Overview
+
+In general, this supports anything that [`gstreamer/playbin`](https://gstreamer.freedesktop.org/documentation/playback/playbin.html?gi-language=c) supports.
+
+Features:
+- Load video files from any file path **or URL** (support for streaming over network).
+- Video buffering when streaming on a network.
+- Audio support.
+- Programmatic control.
+- Can capture thumbnails from a set of timestamps.
+- Good performance (i.e., comparable to other video players). GStreamer (with the right plugins) will perform hardware-accelerated decoding, and the color space (YUV to RGB) is converted on the GPU whilst rendering the frame.
+
+Limitations (hopefully to be fixed):
+- GStreamer is a bit annoying to set up on Windows.
+
+The player **does not** come with any surrounding GUI controls, but they should be quite easy to implement should you need them.
+See the "minimal" example for a demonstration on how you could implement pausing, looping, and seeking.
+
+## Example Usage
+
+```rust
+use iced_video_player::{Video, VideoPlayer};
+
+fn main() -> iced::Result {
+    iced::run("Video Player", (), App::view)
+}
+
+struct App {
+    video: Video,
+}
+
+impl Default for App {
+    fn default() -> Self {
+        App {
+            video: Video::new(&url::Url::parse("file:///C:/my_video.mp4").unwrap()).unwrap(),
+        }
+    }
+}
+
+impl App {
+    fn view(&self) -> iced::Element<()> {
+        VideoPlayer::new(&self.video).into()
+    }
+}
+```
+
+## Building
+
+Follow the [GStreamer build instructions](https://github.com/sdroege/gstreamer-rs#installation). This should be able to compile on MSVC, MinGW, Linux, and MacOS.
+
+## License
+
+Licensed under either
+
+- [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+- [MIT](http://opensource.org/licenses/MIT)
+
+at your option.