feat(esl-utils): Transition duration utility

[fshovchko]

In the scope of this PR I added a utility to get a transition length

[ala-n]

To be discussed on tomorrow's call.

We should have a utility to resolve a class of problems but not specific ones. (But you are really close to making this code universal btw)
Also, the esl-utils can be extended only with unit tests provided for extending, until it's not agreed with a @exadel-inc/esl-core-team.

[ala-n]

To be discussed on tomorrow's call.

We should have a utility to resolve a class of problems but not specific ones. (But you are really close to making this code universal btw) Also, the esl-utils can be extended only with unit tests provided for extending, until it's not agreed with a @exadel-inc/esl-core-team.

/** @example parseTime('.5s') // 500 */
function parseTime(timeStr: string): number;

/** @example parseTimeSet('.5s, 1ms') // [500, 1] */
function parseTimeSet(timeStr: string): number[];
```

[codeclimate]

Code Climate has analyzed commit 6e50bbf and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 54.7% (0.0% change).

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[ala-n]

🎉 This PR is included in version 4.14.0 🎉

The release is available on:

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

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