Add FunAudioLLM and Fun-ASR papers

[LauraGPT]

Summary

Adds two recent FunAudioLLM/Fun-ASR resources to the list:

• FunAudioLLM: Voice Understanding and Generation Foundation Models for Natural Interaction Between Humans and LLMs under Popular Large Audio Models
• Fun-ASR Technical Report under Automatic Speech Recognition (ASR)

Both entries include arXiv and GitHub links, matching the existing README format.

Validation

• git diff --check
• confirmed both new entries appear in README.md
• checked the four added links return HTTP 200:
  • https://arxiv.org/abs/2407.04051
  • https://github.com/FunAudioLLM
  • https://arxiv.org/abs/2509.12508
  • https://github.com/FunAudioLLM/Fun-ASR

[LauraGPT]

Current validation for review:

Changed files: README.md only
Diff size: +2 / -0
PR state: open, non-draft, mergeable=True, mergeable_state=clean
Local branch: clean worktree at 64cbeaad
Validation: git diff --check HEAD~1..HEAD -> pass
Links checked from the added lines:
- https://arxiv.org/abs/2407.04051 -> 200
- https://github.com/FunAudioLLM -> 200
- https://arxiv.org/abs/2509.12508 -> 200
- https://github.com/FunAudioLLM/Fun-ASR -> 200

This is a README-only addition of FunAudioLLM / Fun-ASR papers, with no code or generated artifacts changed.