feat: more plugin work and intra-scope communication

Interfaces/ICurrentLevel.cs

@@ -0,0 +1,7 @@
+namespace GodotHostTest.Interfaces;
+
+public interface ICurrentLevel
+{
+    public int LevelNumber { get; }
+    public void NextLevel();
+}

Interfaces/ILevel.cs

@@ -1,5 +1,8 @@
+using System;
+
 namespace GodotHostTest.Interfaces;
 
 public interface ILevel
 {
+    public TimeSpan TimeBetweenSpawns { get; }
 }

Interfaces/ILevelProvider.cs

@@ -0,0 +1,6 @@
+namespace GodotHostTest.Interfaces;
+
+public interface ILevelDataProvider
+{
+    public ILevel GetLevelData(int levelNumber);
+}