refactor node-utils type guards to use the AST_NODE_TYPES enum

[gndelia]

I found this enum which contains all the types we've been hardcoding in the type guards in node-utils.ts

The import for that enum

import { AST_NODE_TYPES } from '@typescript-eslint/experimental-utils';

We should replace all the hardcoded values in each type guard function (isAwaitExpression, isIdentifier, and so on) for the corresponding values from that enum

Originally posted in #201 (comment)

[nonewcode]

@gndelia will take on this issue

[nonewcode]

@gndelia PR up #205

[Belco90]

🎉 This issue has been resolved in version 3.4.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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