[feat] Import from GitHub functionality

#### Describe the feature
We need to enable the ability for users to import projects into Onlook from GitHub. #2173 already built the UI, now we need to finish the functionality.

**Mockups**

<img width="1924" height="1218" alt="Image" src="https://github.com/user-attachments/assets/527d463b-ab93-478a-9022-a5565e9a6f8f" />

<img width="2340" height="1291" alt="Image" src="https://github.com/user-attachments/assets/c135284c-b24e-4e98-b969-83b78fb7f6d2" />

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[feat] Import from GitHub functionality #2569

Describe the feature

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Development

[feat] Import from GitHub functionality #2569

Description

Describe the feature

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions