Add ability to manage dock size via command/shortcut (#31366)
Closes https://github.com/zed-industries/zed/issues/29856
This idea originates from
https://github.com/microsoft/vscode/issues/158603.
Adds a
```jsonc
"ctrl-alt-0": "workspace::ResetActiveDockSize",
"ctrl-alt--": ["workspace::DecreaseActiveDockSize", { "px": 0 }],
"ctrl-alt-=": ["workspace::IncreaseActiveDockSize", { "px": 0 }],
"ctrl-alt-)": "workspace::ResetOpenDocksSize",
"ctrl-alt-_": ["workspace::DecreaseOpenDocksSize", { "px": 0 }],
"ctrl-alt-+": ["workspace::IncreaseOpenDocksSize", { "px": 0 }],
```
set of actions to manipulate dock sizes:
https://github.com/user-attachments/assets/0428f5ce-1156-449b-838f-a774b935458f
Release Notes:
- Add ability to manipulate dock size with
`workspace::Decrease/IncreaseActiveDockSize`,
`workspace::ResetActiveDockSize`,
`workspace::Decrease/IncreaseOpenDocksSize` and
`workspace::ResetOpenDocksSize` commands
---------
Signed-off-by: Xavier Lau <x@acg.box>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
c15d02454e