add unloading for mod assemblies

CringeLauncher/Utils/MethodTools.cs

@@ -0,0 +1,20 @@
+using System.Reflection;
+using HarmonyLib;
+using MonoMod.Utils;
+
+namespace CringeLauncher.Utils;
+
+public static class MethodTools
+{
+    public static MethodInfo AsyncMethodBody(MethodInfo method)
+    {
+        var (_, operand) = PatchProcessor.ReadMethodBody(method).First();
+        
+        if (operand is not LocalVariableInfo localVar)
+            throw new InvalidOperationException($"Method {method.GetID()} does not contain a valid async state machine");
+
+        return AccessTools.Method(localVar.LocalType, "MoveNext") ??
+               throw new InvalidOperationException(
+                   $"Async State machine of method {method.GetID()} does not contain a valid MoveNext method");
+    }
+}