Migrate our IPC Api to oRPC

[ibetitsmike]

https://github.com/unnoq/orpc

Migrating to oRPC will enable a whole world of opportunities while having zero downsides.

• it has an Electron compatibility layer - https://orpc.unnoq.com/docs/adapters/electron
• it's strongly typed - enabling agents to work on the codebase with higher precision
• exposes an OpenAPI spec https://orpc.unnoq.com/docs/openapi/getting-started - which opens up to external integrations, easier external extensions, etc.