AK: Rename the common integer typedefs to make it obvious what they are.

These types can be picked up by including <AK/Types.h>:

* u8, u16, u32, u64 (unsigned)
* i8, i16, i32, i64 (signed)

Kernel/Net/Socket.h

@@ -9,7 +9,7 @@
 #include <Kernel/Lock.h>
 #include <Kernel/UnixTypes.h>
 
-enum class SocketRole : byte {
+enum class SocketRole : u8 {
     None,
     Listener,
     Accepted,