Fixed AT not being declared in manifest + fix build.gradle tab/space mix

gradle.properties

@@ -14,6 +14,9 @@ use_mixins = false
 use_coremod = false
 use_assetmover = false
 
+# Access Transformer files should be in the root of `resources` folder and with the filename formatted as: `{archives_base_name}_at.cfg`
+use_access_transformer = false
+
 # Coremod Arguments
 include_mod = true
 coremod_plugin_class_name =