779: Fix hub insertion r=kvark a=kvark

**Connections**
Fixes #778 
Follow-up to #776

**Description**
Problem was `resize_with` takes new length, not a difference.

**Testing**
Untested

Co-authored-by: Dzmitry Malyshau <kvarkus@gmail.com>

782: Add check while trying to remove uninserted Ids r=kvark a=kunalmohan

**Connections**
_Link to the issues addressed by this PR, or dependent PRs in other repositories_
An attempt to fix #781 
regression from #776 

**Description**
_Describe what problem this is solving, and how it's solved._
When we used `VecMap`, it simply returned `None` for even out of bounds access to the map (We depended on it returning `None`). After #776 , we get a panic. So adding a simple index check before accessing it fixes this issue.

**Testing**
_Explain how this change is tested._
Tested on wgpu-rs examples with the changes in gfx-rs/wgpu-rs#430. All examples run fine except the `cube` which segfaults.
<!--
Non-trivial functional changes would need to be tested through:
  - [wgpu-rs](https://github.com/gfx-rs/wgpu-rs) - test the examples.
  - [wgpu-native](https://github.com/gfx-rs/wgpu-native/) - check the generated C header for sanity.

Ideally, a PR needs to link to the draft PRs in these projects with relevant modifications.
See #666 for an example.
If you can add a unit/integration test here in `wgpu`, that would be best.
-->


Co-authored-by: Kunal Mohan <kunalmohan99@gmail.com>

783: Basic use of Error for bind groups r=kvark a=kvark

**Connections**
Follow up to #776 

**Description**
Trying to tidy up a few things and add a public use of `Error` variant

**Testing**
not tested

Co-authored-by: Dzmitry Malyshau <kvarkus@gmail.com>

857: Separate valid internal IDs from external ones r=cwfitzgerald a=kvark

**Connections**
Closes #638 
wgpu-rs update - gfx-rs/wgpu-rs#494

**Description**
The core change here is to allow user-specified IDs to be in the "Error" state that was introduced in #776 .

This is done by defining an internal `Valid<I>` wrapper. Now, the hub storages can be indexed by this valid wrapper only. For regular IDs, we have to go through `storage.get(index)`, which returns a `Result`. It still panics if the ID is totally garbage though, we don't want to handle what can't be expected here.

All the other changes come mostly as a consequence of that:
  - new "Invalid*" error variants are added
  - the error types are undergone sever refactoring
  - new `command/draw.rs` module for stuff shared between render passes and bundles
  - functions to generate error IDs for all the types
  - various renames, e.g. `comb` -> `cmd_buf`

The expected use by wgpu-rs is unchanged. So far, I don't think we'd be generating Error IDs, but we can always reconsider.
For browsers though, if `device_create_xxx` failed, they would generate and error ID. It will occupy the slot up until the corresponding JS object is dropped.

**Testing**
Tested on wgpu-rs examples

Co-authored-by: Dzmitry Malyshau <kvarkus@gmail.com>

776: Update wgpu with the new vertex format r=kvark a=kvark

Based on gfx-rs#1235

Co-authored-by: Dzmitry Malyshau <kvarkus@gmail.com>