feature: @putout/plugin-variables: add

Author: coderaiser

README.md

@@ -3,6 +3,7 @@ import * as applyObject from './apply-object/index.js';
 import * as applyArray from './apply-array/index.js';
 import * as removeUselessObject from './remove-useless-object/index.js';
 import * as removeUselessArguments from './remove-useless-arguments/index.js';
+import * as removeUselessVariables from './remove-useless-variables/index.js';
 import * as splitNested from './split-nested/index.js';
 import * as splitCall from './split-call/index.js';
 import * as mergeProperties from './merge-properties/index.js';
@@ -12,6 +13,7 @@ export const rules = {
     'apply-array': applyArray,
     'remove-useless-object': removeUselessObject,
     'remove-useless-arguments': removeUselessArguments,
+    'remove-useless-variables': removeUselessVariables,
     'convert-object-to-array': convertObjectToArray,
     'split-nested': splitNested,
     'split-call': splitCall,