Add contract test linting

apps/.eslintrc.js

@@ -0,0 +1,12 @@
+module.exports = {
+  'globals': {
+    contract: true,
+    describe: true,
+    it: true,
+  },
+  rules: {
+    'no-unused-vars': ['error', {
+      'argsIgnorePattern': '^_',
+    }],
+  }
+}