Automate the release process so it can be triggered entirely from the GitHub Actions

[Giovds]

Update the release-to-central.yml workflow to:

• Accept a version input via workflow_dispatch so the release version can be specified from the GitHub UI
• Validate that the provided version is not lower than the current version in pom.xml to prevent deploying versions that could already be in maven central.
• Automatically run mvn versions:set to update pom.xml to the release version
• Commit the version change and create a git tag
• Build, sign, and publish to Maven Central (existing steps)
• Automatically bump pom.xml to the next patch SNAPSHOT version and commit
• Push all commits and the tag to main