Mainly the followin changes:
- Pass majority of code to the old and plain synchronous style
and start using virtual threads for the RPC (and partially some
HTTP server middlewares).
- Make some improvements on how CLIMIT is handled, simplifying code
- Improve considerably performance reducing the reflection and
unnecesary funcion calls on the whole stack-trace of an RPC call.
- Improve efficiency reducing considerably the total threads number.
