1.8.0, merging Mono and Il2Cpp builds, adding BepInEx support

* Project renamed to Explorer to reflect the new scope
* Merged Mono and Il2Cpp builds
* Merged BepInEx and MelonLoader builds
* Some minor changes to accommodate for this
* The release DLL and the config file now use "Explorer" in place of "CppExplorer" for file and folder names

src/Extensions/ReflectionExtensions.cs

@@ -7,6 +7,7 @@ namespace Explorer
 {
     public static class ReflectionExtensions
     {
+#if CPP
         /// <summary>
         /// Extension to allow for easy, non-generic Il2Cpp casting.
         /// The extension is on System.Object, but only Il2Cpp objects would be a valid target.
@@ -15,6 +16,7 @@ namespace Explorer
         {
             return ReflectionHelpers.Il2CppCast(obj, castTo);
         }
+#endif
 
         /// <summary>
         /// Extension to safely try to get all Types from an Assembly, with a fallback for ReflectionTypeLoadException.