[CLNP-3380] chore: add release automation workflow

[AhyoungRyu]

Our current release steps are like below.

1. Preparation
   a. Create a release branch; release/v{version}
   b. Update package.json
   c. Write CHANGELOG
   d. Push to remote
   e. create a PR
2. Run /bot create ticket to create a release ticket and get an approval from a manager
3. Once 2 is done, run yarn run build -> cd dist -> yarn npm publish

This workflow will cover step 3. Step 1 & 2 need to be done manually as we've done.

How can we trigger the workflow?

graph TD
  A[Start: Run workflow] --> B[Check if release branch exists]
  B --> C{npm_tag provided?}
  C -- Yes --> E[Update version in package.json]
  C -- No --> F[Install and Build]
  E --> F
  F --> G[Publish to npm]
  G --> H{npm_tag provided?}
  H -- Yes --> I[Publish with tag] --> End
  H -- No --> J[Publish without tag]
  J --> L[Tag new target and push to origin]
  L --> End

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[bang9]

lgtm!