[DEV] Deprecate old "isFabric" check in ModloaderEnvironment

Common/src/main/java/com/hypherionmc/craterlib/core/platform/LoaderType.java

@@ -0,0 +1,8 @@
+package com.hypherionmc.craterlib.core.platform;
+
+public enum LoaderType {
+    FABRIC,
+    FORGE,
+    NEOFORGE,
+    PAPER
+}

Common/src/main/java/com/hypherionmc/craterlib/core/platform/ModloaderEnvironment.java

@@ -12,8 +12,11 @@ public interface ModloaderEnvironment {
 
     public final ModloaderEnvironment INSTANCE = InternalServiceUtil.load(ModloaderEnvironment.class);
 
+    @Deprecated(forRemoval = true, since = "2.0.2")
     boolean isFabric();
 
+    LoaderType getLoaderType();
+
     String getGameVersion();
 
     File getGameFolder();