* Update Modal App:
Updated Modal App to include:
1. Latest Modal API usage
2. Ability to launch different Pipecat pipelines, much like the
simple chatbot example
3. Ability to choose which pipeline is launched via the
/connect endpoint
4. Added a pipeline option for connecting to a self-hosted LLM
on Modal
5. Improved READMEs
6. Added a web client for interacting with the Modal deployment
tmp
* Update README
