feat: [BE] allow users to change Jan Data Folder

[imtuyethan]

Epic: Files & Links https://github.com/orgs/janhq/projects/5/views/16?pane=issue&itemId=49509878
Related design ticket: #1010
Related FE task: #1618

Goal

Allow users to change the app data folder in settings

Design

Full design flow: https://www.figma.com/file/ytn1nRZ17FUmJHTlhmZB9f/Jan-App?type=design&node-id=2270-285004&mode=design&t=bQyiFG80Dcr1XlBm-4

User flow

1. Go to Settings / Advanced Settings
2. See Jan Data Folder
3. Users can:

• Show Jan Data Folder in Finder.
• Relocate Jan Data Folder by clicking on the edit button.

4. Users need to confirm if they want to relocate Jan App Folder request.

5. Users can see the progress of relocating Jan App Folder.

6. The app will restart upon completion.

Error scenarios

1. Folder is not available / does not have enough space

2. A more generic error for other disrupting cases

[namchuai]

Maybe need wait until @urmauur submit the PR for the UI before this ticket can be tested @louis-jan

[namchuai]

@Van-QA , please help to verify this ticket. Thank you!

[Van-QA]

@namchuai another case with the Move Jan Data app, we need to check whether the destination folder is empty or not, before moving ❌
The fix should include a popup to warn users that the selected folder is not empty. @urmauur

Attached is the Figma provided by Ashley for future reference: https://www.figma.com/file/ytn1nRZ17FUmJHTlhmZB9f/Jan-App?type=design&node-id=3947-233072&mode=design&t=DY03nXp82uhdD081-0

[Van-QA]

Completely tested on Jan v0.4.5-224