splicectl: Release - Redhat/CentOS (yum/rpm) Package build during github actions

Description

Added a github action that deploys a new rpm package with the updated splicectl artifact every time a release is submitted to gh.

Motivation and Context

This makes it much easier to install and manage splicectl on Redhat/CentOS machines now, and any other distros that use rpm packages.

See (DBAAS-5849)[https://splicemachine.atlassian.net/browse/DBAAS-5849?atlOrigin=eyJpIjoiY2RlMTBkYTZhOTU0NGZkNmE4YTEzZjU2OWUwNTExN2UiLCJwIjoiaiJ9]

Dependencies

How Has This Been Tested?

I made a fork of this repository and tested the whole process with a manual trigger of the workflow, all of the packages made it to their destination. There is also a test built into the action, where it will use yum to install the package and make sure the version that is output by the splicectl version command matches the newest release in effect verifying the new artifact has been installed.

Screenshots (if appropriate)

Checklist

If the pull request includes user-facing changes, extra documentation is required:

[ ] If the change is user facing, please ensure you add info in one of the Changelog Inclusions sections.

Changelog Inclusions

base feature note
- BREAKING note on base feature
- Basically whatever formatting we have here, just plain-text %> command example
next feature
- note on next feature

Additions

Can now install splicectl on Redhat and CentOS using the instructions in the top level readme.

splicemachine / splicectl