Allow non-null assertion operator

Author: CMCDragonkai

.eslintrc

@@ -28,6 +28,7 @@
     "@typescript-eslint/no-explicit-any": 0,
     "@typescript-eslint/explicit-module-boundary-types": 0,
     "@typescript-eslint/no-unused-vars": "warn",
-    "@typescript-eslint/no-inferrable-types": 0
+    "@typescript-eslint/no-inferrable-types": 0,
+    "@typescript-eslint/no-non-null-assertion": 0
   }
 }