LibCore: Move Stream-based sockets into the Core namespace

Author: https://github.com/timschumi
Commit: a96339b72b
Pull-request: https://github.com/SerenityOS/serenity/pull/17406
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibIPC/ConnectionFromClient.h

@@ -26,7 +26,7 @@ public:
     using ServerStub = typename ServerEndpoint::Stub;
     using IPCProxy = typename ClientEndpoint::template Proxy<ServerEndpoint>;
 
-    ConnectionFromClient(ServerStub& stub, NonnullOwnPtr<Core::Stream::LocalSocket> socket, int client_id)
+    ConnectionFromClient(ServerStub& stub, NonnullOwnPtr<Core::LocalSocket> socket, int client_id)
         : IPC::Connection<ServerEndpoint, ClientEndpoint>(stub, move(socket))
         , ClientEndpoint::template Proxy<ServerEndpoint>(*this, {})
         , m_client_id(client_id)