refactor(service): Use SyncRwLock and SyncMutex for in-memory services

Convert in-memory data structures in appservice, rooms::typing, and sync
wakers to use SyncRwLock and SyncMutex. Drop appservice locks before
making outbound network requests in room alias queries and federation
invites.

src/core/mod.rs

@@ -36,7 +36,10 @@ pub use config::Config;
 pub use error::Error;
 pub use info::version::*;
 pub use matrix::{Event, EventTypeExt, Pdu, PduCount, PduEvent, PduId, pdu, state_res};
-pub use parking_lot::{Mutex as SyncMutex, RwLock as SyncRwLock};
+pub use parking_lot::{
+	Mutex as SyncMutex, RwLock as SyncRwLock, RwLockReadGuard as SyncRwLockReadGuard,
+	RwLockWriteGuard as SyncRwLockWriteGuard,
+};
 pub use server::Server;
 pub use utils::{result, result::Result};