IPC

[pent0]

This PR targeted to make a basic functional IPC system, and DFC if possible

1. IPC

• Client: Can send a blind message, or send and receive synchronously or asynchronously.
• Server: Receive a message

These two types: as a kernel object, will be the implementation of RSessionBase and RServer2, founding CSession2 and CServer2.

• HLE IPC implemenation:
  • These calls are redirected to a HLE IPC server, which will fetch these call asynchronously each 64 ticks and execute the accepted messages queue. Sync and receive should put a thread to sleep until a certain nanoseconds.

## 2. DFC (No)

• Replace the current thread handling with a DFC queue, to make compatibility with drivers that make IPC calls (unconfirmed).

## 3. FS IPC call (Master)

• CApaCommandLine requires a EFileAdopt IPC call, so implementation of the FS IPC system calls is important. See FS:USER IPC & Tracking FBS #23 for more info.

[pent0]

I was intended for this to include FS implementation, but now I feel like I shouldn't. AppArc server along with FS server will be implemented in master or another PR. DFC is unnecessary.