Implement a handler for logging routes

src/main/java/emu/grasscutter/server/dispatch/ClientLogHandler.java

@@ -0,0 +1,19 @@
+package emu.grasscutter.server.dispatch;
+
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
+
+import java.io.IOException;
+
+/**
+ * Used for processing crash dumps & logs generated by the game.
+ * Logs are in JSON, and are sent to the server for logging.
+ */
+public final class ClientLogHandler implements HttpContextHandler {
+    @Override
+    public void handle(Request request, Response response) throws IOException {
+        // TODO: Figure out how to dump request body and log to file.
+        response.send("{\"code\":0}");
+    }
+}