613: Add more context to errors originating in Passes and Encoders r=kvark a=Kimundi
**Description**
This adds some top-level error context information to indicate wether an error originated in a `{Render,Compute}Pass` or `{Command,RenderBundle}Encoder` to make error messages more clear.
Combined with https://github.com/gfx-rs/wgpu/pull/1018, errors in passes will look like this:
```
wgpu error: Validation error
Caused by:
In a RenderPass
In a draw command
index 3600 extends beyond limit 38
```
Co-authored-by: Marvin Löbel <loebel.marvin@gmail.com>