This brings over a simplified version of the open ai feature from the
previous app but in widget form. It still needs some work to reach
parity with that version, but this includes all of the basic building
blocks to get that working.
lots of changes. new wshrpc implementation. unify websocket, web,
blockcontroller, domain sockets, and terminal inputs to all use the new
rpc system.
lots of moving files around to deal with circular dependencies
use new wshrpc as a client in wsh cmd
