Can you list the main types of threads used in Embedder?

Embedder Flutter uses several main types of threads to organize work:

1. UI Thread (Main Thread) — responsible for rendering the interface and handling user events.
2. GPU Thread — handles graphics rendering on the GPU.
3. IO Thread — processes input/output, such as resource loading.
4. Platform Thread — the thread on which native platform code runs (e.g., Android or iOS).

These threads interact with each other, ensuring smooth application operation and task separation across threads to improve performance.