Provide better names to event loop-related IConnection methods

src/Proxy.cpp

@@ -56,7 +56,7 @@ Proxy::Proxy( std::unique_ptr<sdbus::internal::IConnection>&& connection
 {
     // The connection is ours only, i.e. it's us who has to manage the event loop upon this connection,
     // in order that we get and process signals, async call replies, and other messages from D-Bus.
-    connection_->enterProcessingLoopAsync();
+    connection_->enterEventLoopAsync();
 }
 
 MethodCall Proxy::createMethodCall(const std::string& interfaceName, const std::string& methodName)