Add man pages for kraftkit

[thass0]

Feature request summary

On Unix-like systems, virtually all core applications and many system features have "man pages" that hold relevant documentation. I would be cool if kraftkit also had such a man pages. This way, one could run man kraft locally to read up on kraftkit documentation.

Kraftkit uses cobra for it's CLI, and cobra can auto-generate documentation based on the CLI. This includes generating man pages. In addition to that, there is the gendocs tool in krafkit that generates CLI docs in a different format than cobra would. The output of the gendocs tool is used verbatim in the kraftkit and Unikraft online docs. That's why the format is different.

To add man pages to kraftkit:

• generate man pages from the CLI
• modify the kraftkit installer scripts to make them install the man pages on the user's system (and maybe ask them if they want that)

Describe alternatives

There are web docs and the kraft command itself can display help information.

Related architectures

None

Related platforms

None

Additional context

No response