auto-fix lint rule for missing template imports

Author: ef4

packages/host/.eslintrc.js

@@ -96,6 +96,14 @@ module.exports = {
         'deprecation/deprecation': 'off',
         'window-mock/mock-window-only': 'error',
         'window-mock/wrapped-setup-helpers-only': 'error',
+        'ember/template-missing-invokable': [
+          'error',
+          {
+            invokables: {
+              eq: ['eq', '@cardstack/boxel-ui/helpers'],
+            },
+          },
+        ],
       },
     },
     // node files

packages/host/package.json

@@ -134,7 +134,7 @@
     "ember-window-mock": "^1.0.1",
     "eslint": "^8.52.0",
     "eslint-config-prettier": "^9.0.0",
-    "eslint-plugin-ember": "^12.1.1",
+    "eslint-plugin-ember": "ember-cli/eslint-plugin-ember#870ee2fa24ae826d431fca8e6109dbc389f368f6",
     "eslint-plugin-import": "^2.28.1",
     "eslint-plugin-n": "^16.2.0",
     "eslint-plugin-prettier": "^5.0.1",