change log levels of common warnings and errors to debug

this hides a lot of the "standard" errors we get behind the debug flag.
for example, disconnecting a disconnected player would be such an error

src/Client.cpp

@@ -62,11 +62,11 @@ void TClient::Disconnect(std::string_view Reason) {
     boost::system::error_code ec;
     mSocket.shutdown(socket_base::shutdown_both, ec);
     if (ec) {
-        beammp_warnf("Failed to shutdown client socket: {}", ec.message());
+        beammp_debugf("Failed to shutdown client socket: {}", ec.message());
     }
     mSocket.close(ec);
     if (ec) {
-        beammp_warnf("Failed to close client socket: {}", ec.message());
+        beammp_debugf("Failed to close client socket: {}", ec.message());
     }
 }
 

src/TNetwork.cpp

@@ -273,7 +273,7 @@ std::shared_ptr<TClient> TNetwork::Authentication(TConnection&& RawConnection) {
             return nullptr;
         }
     } catch (const std::exception& e) {
-        beammp_errorf("Client sent invalid key: {}", e.what());
+        beammp_errorf("Client sent invalid key. Error was: {}", e.what());
         // TODO: we should really clarify that this was a backend response or parsing error
         ClientKick(*Client, "Invalid key! Please restart your game.");
         return nullptr;
@@ -425,7 +425,7 @@ std::vector<uint8_t> TNetwork::TCPRcv(TClient& c) {
 void TNetwork::ClientKick(TClient& c, const std::string& R) {
     beammp_info("Client kicked: " + R);
     if (!TCPSend(c, StringToVector("K" + R))) {
-        beammp_warn("tried to kick player '" + c.GetName() + "' (id " + std::to_string(c.GetID()) + "), but was already disconnected");
+        beammp_debugf("tried to kick player '{}' (id {}), but was already connected", c.GetName(), c.GetID());
     }
     c.Disconnect("Kicked");
 }

src/TServer.cpp

@@ -225,7 +225,7 @@ bool TServer::IsUnicycle(TClient& c, const std::string& CarJson) {
             return true;
         }
     } catch (const std::exception& e) {
-        beammp_error("Failed to parse vehicle data as json for client " + std::to_string(c.GetID()) + ": '" + CarJson + "'");
+        beammp_warn("Failed to parse vehicle data as json for client " + std::to_string(c.GetID()) + ": '" + CarJson + "'.");
     }
     return false;
 }