[feat] Allow Changing Default Project Folder

[devvaannsh]

Describe the problem

There should be an option to change the default-project folder.

Refer to this discussion for more details

Describe the solution you'd like

Add a setting in defaultPreferences.json to let users set a custom default project folder.

Alternatives considered

No response

Additional context

No response

[devvaannsh]

This is a highly requested feature.