add spellcheck

Author: volodymyr-basiuk

.eslintrc

@@ -0,0 +1,18 @@
+const iden3Config = require('@iden3/eslint-config');
+const { spellcheckerRule, cspellConfig } = require('@iden3/eslint-config/cspell');
+
+module.exports = {
+  ...iden3Config,
+  rules: {
+    '@cspell/spellchecker': [
+      1,
+      {
+        ...spellcheckerRule,
+        cspell: {
+          ...cspellConfig,
+          ignoreWords: ['multigraph', 'kubo']
+        }
+      }
+    ]
+  }
+};