Update README: clarify instructions, update paths, and refine directory structure documentation

Update README file.

Update README file.

Update README.md: clarify usage details, add dynamic speaker management, and refine documentation for consistency and completeness.

Add metadata section to README.md for project details and tags

Update README.md: revise feature descriptions, add new Web API service section, update supported TTS models and characters, and include enhanced installation and usage instructions.

Integrate FunASR service.

Update README for enhanced installation and usage guidance.

First commit.