Add Command SetLevel (#8)

* Add Remote Command API (Use KEY)

* Clean up HttpServer by removing unused code

Removed commented-out code

* Add SetLevel Command (need to restart the game for it to take effect)

* Add Proto Request Change Level (Not Work)

* Update setlevel command

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Co-authored-by: Melledy <121644117+Melledy@users.noreply.github.com>

src/main/java/emu/nebula/data/GameData.java

@@ -130,4 +130,4 @@ public class GameData {
     
     // Score boss
     @Getter private static DataTable<ScoreBossControlDef> ScoreBossControlDataTable = new DataTable<>();
-}
+}