ci: fix release workflow

[nickolas-dimitrakas]

Background

• The SDK currently lacks an automated release process. Maintainers need a streamlined way to bump versions, create releases, and publish to CocoaPods without manual intervention.

What Has Changed

• Added automated release workflow (.github/workflows/draft-release-publish.yml) that creates a PR with version bumps (major/minor/patch)
• Added automated publish workflow (.github/workflows/release-from-main.yml) that triggers on PR merge to create git tags and push to CocoaPods trunk
• Created RELEASING.md documentation describing the complete release process

Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have tested this locally.

Reference Issue (For employees only. Ignore if you are an outside contributor)

• Closes NO JIRA