[feat]-save

[0xk2]

Problem

User can not save the project right now

Solution

User can open past project & save the current project. Saving means:

• [ ] Save the project context into database
• [ ] All files built by AI will be saved on server

Please finisih #6 before doing this

[hhdgknsn]

Additional tasks:

• [ ] Add loading modal when saving project, render success message/icon after saved.