DashBot Update

[siddu015]

PR Description

Improved DashBot functionality and UI:

• Added API documentation generation
• Added API understanding and test generation
• Added minimize/maximize and close controls
• Repositioned to bottom-right for better UX
• Ensured system remains interactive while DashBot is open

Related Issues

• #621

Checklist

• [x] I have gone through the contributing guide
• [x] I have updated my branch and synced it with project main branch before making this PR
• [x] I am using the latest Flutter stable branch (run flutter upgrade and verify)
• [x] I have run the tests (flutter test) and all tests are passing

Added/updated tests?

We encourage you to add relevant test cases.

• [ ] Yes
• [ ] No, and this is why: please replace this line with details on why tests have not been included

OS on which you have developed and tested the feature?

• [x] Windows
• [x] macOS
• [ ] Linux

[siddu015]

@ashitaprasad here are few snaps from recent changes on dashbot