feat(base) Use the types from http instead of ruma directly.

This patch uses the types from `http` instead of `ruma` directly.

Author: Hywan

crates/matrix-sdk-base/src/lib.rs

@@ -34,7 +34,7 @@ mod rooms;
 pub mod read_receipts;
 pub use read_receipts::PreviousEventsProvider;
 #[cfg(feature = "experimental-sliding-sync")]
-mod sliding_sync;
+pub mod sliding_sync;
 
 pub mod store;
 pub mod sync;