chore: add release scripts

[jye-sf]

One step closer to a 1-button release process.
The remaining work involves git automation around branch protection, pushing the actual changes to the remote, and changelog generation.

[jye-sf]

The current general release process for our repos will be:

// Version update
yarn release:version

// github related tasks
git push origin <branch>
git push origin <tag>

// Publish
yarn release:publish

Github related tasks require unlocking and re-locking branch protections. Will look into having CircleCI handle that.

[jye-sf]

https://app.circleci.com/pipelines/github/salesforce/eslint-plugin-lwc/281/workflows/a3b90f6a-e1a7-4823-9313-7d8f5e5afa24/jobs/384 for sample dry run of the deploy job.

[jye-sf]

With the CircleCI script, our general release process should now be:

// Version update
yarn release:version

// github related tasks
git push origin <branch>
git push origin <tag>

// Manually create release with release notes

CircleCI should now handle the publish.

[jye-sf]

Work to automate changelog generation and release notes will be done in a separate PR.

[jye-sf]

Will remove the --dry-run tag AFTER review for safety.