* feat: add initial version of command groups and template engine (#215)
* feat: add relevant dependencies and vendor files (#215)
* feat: extend TestUsageFlags for hidden flags and flags with no shorthand (#215)
* feat: refactor root.go to use command groups (#215)
* feat: move the long help of root cmd to the usage templates section (#215)
* feat: updates after rebase (#215)
* feat: update after review (#215)
* feat: rename 'options' into 'flags' to align with the old help (#215)
* feat: remove support for help options, add template for global flags help section (#215)
* feat: update handling of root command help to support proper use of templates and docs generation (#215)
* feat: generate new docs (#215)