idea_NingWei_AI UI Designer for APIs.md

[AllenWn]

PR Description

This PR adds my GSoC 2025 draft proposal for the idea: AI UI Designer for APIs.
I’ve added the proposal markdown file under doc/proposals/2025/gsoc/ as per the instructions.

I would love to receive feedback and suggestions from the mentors to improve and finalize my application!

Related Issues

• Discussed in: API Dash Idea #617 - AI UI Designer for APIs

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 (if applicable)

Added/updated tests?

This PR adds a proposal file and does not contain any testable code.

• Yes
• No, and this is why: This PR only adds a markdown proposal draft, no tests are relevant at this stage.

OS on which you have developed and tested the feature?

• Windows
• macOS
• Linux

[ashitaprasad]

@AllenWn Please send a PR converting an API response into Flutter UI.
Also, add more implementation details like how the API Response will be converted to Widgets via LLM (Ollama, or API) and how exactly this dynamically generated widget will be rendered.