Add support for fpx otel traces

Add new /v1/traces URL to typescript API
- Modify CLI to use this
- Modify Middleware to send JSON payloads for now
Update AI to handle different types of request bodies
Update Requestor to work with Otel data
- API
  - Make sure the api sends a valid otel trace id to inject as parent
- Middleware
  - HACK - Propagate x-fpx-trace-id with a dummy span parent
Implement route probing on middleware
- Changed
  - Uses separate api route to report routes
  - Middleware must construct this URL itself
  - Routes are no longer refreshed with each request
Use Hacked versions of Hono types in the middleware to prevent downstream type errors when publishing the otel middleware package
Middleware: Report the request body and env vars in middleware root span for request
Middleware Accept non-string messages as log arguments
Middleware: Support patching console.debug
Remove lots of code
- Remove old request details page and turn on the tracing UI by default
- Remove almost all old schemas and data types related to MizuLogs and MizuMessages, et al
- Remove API route for /v0/logs

fiberplane / fpx