* feat: support listening https
* refactor
* modernize
* support snake case in config
* more precise control of config fields
* update goreleaser config
* remove kubeyaml
* fix: expose agent_secret
* chore
* Refactor: Load UserTemplates from embedded yaml file
* feat: add version field to UserTemplates
* refactor: use shell script to fetch frontends
* chore: add *-dist to .gitignore
* refactor: rename to FrontendTemplates
BREAKING CHANGE: This commit changes the `user_templates` filed
in the communication json between backend and the admin-frontend.
Keep user config.yml `user_template` filed.