14.0 t3946 cetmix tower server references for keys

[ivs-cetmix]

cx.tower.key

• Use tower reference mixin for reference generation

cx.tower.reference.mixin

• Refactor 'write' method in order to handle a case when reference is generated based on the existing record name
• Add context key to 'create' and 'write' methods in case it's needed to disable reference management flow in call

cx.tower.variable

• Add 'tower.server.reference' system variable

cx.tower.server

• Fix non global secret key rendering error

[ivs-cetmix]

/ocabot merge nobump

[CetmixGitDrone]

This PR looks fantastic, let's merge it! Prepared branch 14.0-dev-ocabot-merge-pr-96-by-ivs-cetmix-bump-nobump, awaiting test results.

[CetmixGitDrone]

Congratulations, your PR was merged at 30341d6ef357aa5ed16de2ea857314baf46c4bd1. Thanks a lot for contributing to cetmix. ❤️