kci command line tool rework

[gctucker]

The kci command is to the new API & Pipeline what the kci_* tools were for the legacy system. It needs to be clearly designed to ease adoption by the community as a tool for KernelCI core developers but also any member of the kernel ecosystem: kernel developers, test system developers etc. I should help with prototyping features by hand before automating them with services running event loops and also work hand-in-hand with the new web dashboard.

Several aspects need to be considered, in particular: feature set, ease of implementation and maintenance of the code, direct user experience, documentation, accessibility.

Here are some of the topics as part of the preparation work:

• [x] https://github.com/kernelci/kernelci-project/discussions/258
• [x] https://github.com/kernelci/kernelci-project/discussions/263
• [x] https://github.com/kernelci/kernelci-project/discussions/261

Based on the outcome of these, here's the list of tasks to complete:

• [x] Legacy code moved to kernelci.legacy
  • [x] #2127
  • [x] https://github.com/kernelci/kernelci-pipeline/pull/338
• [x] New kci entry point command implemented using chosen framework
  • [x] #2133
• [x] TOML settings features integrated with arguments parsing and secrets
  • [x] #2129
• [ ] Common options and CLI framework
  • [x] #2178
  • [x] #2195
  • [x] #2230
  • [x] #2233
• [ ] Required set of sub-commands implemented
  • [ ] kci user
  • [x] #2141
  • [x] #2183
  • [x] #2084
  • [ ] #2205
  • [x] #2239
  • [x] #2236
  • [ ] kci config
  • [x] #2138
  • [ ] #2226
  • [x] kci job
  • [x] #2220
  • [x] #2227
  • [x] kci node
  • [x] #2204
  • [x] #2231
  • [x] kci event
  • [x] #2203
  • [x] kci storage
  • [x] #2161
  • [x] #2134
• [ ] Documentation updated accordingly
  • [ ] HTML / Markdown for online pages
  • [ ] man pages and offline help

Some follow-up GitHub issues will be created for additional commands such as kci view, kci bisect, kci email etc.

[gctucker]

@JenySadadia I'm reassigning this to you for now as I'm not planning to do any further work.