This is a follow up of #10810 , `embed-resource` crate uses a different
method to link the manifest file, so this makes moving manifest file to
`gpui` possible.
Now, examples can run as expected:

TODO:
- [ ] check if it builds with gnu toolchain
Release Notes:
- N/A
I saved the `file_types.json` file and got a diff because it had some
trailing whitespace. I ran
[`lineman`](https://github.com/JosephTLyons/lineman) on the codebase.
I've done this before, but this time, I've added in the following
settings to our `.zed` local settings, to make sure every future save
respects our desire to have consistent whitespace formatting.
```json
"remove_trailing_whitespace_on_save": true,
"ensure_final_newline_on_save": true
```
Release Notes:
- N/A
Now `Zed` can display icons. The image below shows the icon of the
`zed.exe` file and the icon in the right-click properties.

I used the `crates\zed\resources\app-icon@2x.png` file to generate the
`.ico` file. Due to some blank space around the logo in the original
file, the logo appears slightly smaller on Windows compared to other
software.

The current `.ico` file contains logo files of multiple sizes: 16x16,
24x24, 32x32, 48x48, 64x64, 96x96, 128x128, 256x256, 512x512.
Release Notes:
- N/A