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

• DashBot - the AI assistant for API Dash #621

Checklist

• I have gone through the contributing guide
• I have updated my branch and synced it with project main branch before making this PR
• I am using the latest Flutter stable branch (run flutter upgrade and verify)
• 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?

• Windows
• macOS
• Linux

[siddu015]

@ashitaprasad here are few snaps from recent changes on dashbot