4601: Introduce `toggle inlay hints` vscode command r=matklad a=Veetaha
Users now can assign a shortcut for this command
via the general vscode
keybindings ui or `keybindings.json` file
<details>
<summary>Demo</summary>

</details>
<details>
<summary>Howto assign a shortcut</summary>

</details>
Closes: #4599
Co-authored-by: veetaha <veetaha2@gmail.com>