Disable 'no-non-null-assertion'

Since we use it intentionally, and now only at 99 problems!

Author: andyleejordan

.eslintrc.json

@@ -28,6 +28,9 @@
     "semi": [
       "error",
       "always"
+    ],
+    "@typescript-eslint/no-non-null-assertion": [
+      "off"
     ]
   }
 }