[CI-18894] Sonatype publish workflow

[ahavryliuk-sift]

Purpose

https://sift.atlassian.net/browse/CI-18894

Summary

Automate release for sift-android using new Sonatype publishing mechanism

Testing

Few commits have been pushed for workflow testing:

• package is building, signing and uploading to Sonatype staging api for manual release, similar to sift-java package

• when package version gets bumped, Sonatype validation passes successfully

Checklist

• The change was thoroughly tested manually
• The change was covered with unit tests
• The change was tested with the integration example
• Necessary changes were made in the integration example (if applicable)
• New functionality is reflected in README (if applicable)

[iprysiazhnyi-sift]

lgtm