Enhancement: Unify <list>,<ls> sub-commands parameters

[tregubovav-dev]

Issue

Incus provides list sub-commands in multiple commands. Some of them have advanced options like --format and --columns, but some does not have such options. Unified set of options significantly simplifies automation scripts development.
Below is subset of commands with different options availability:

• incus list, incus cluster list, incus storage list, incus network list, etc. provide both --format and --columns options
• incus cluster list-tokens, incus cluster group list, incus snapshot list, incus storage bucket list provides the only --format option.
• incus admin cluster list-database has no options. Even it provides single column output --format option may be useful.

There were many list'-like commands received --formatand--columns` options since forking from the LXD. I would appreciate it if all remaining commands could receive these options.

P.S.

Two more possible enhancements:

• header-less format output would be useful at least for compact format option. For example: --format compact-no-header. It could be used with shell commands or scripts like in example below:

for inst in $(incus list <name pattern> -f compact-no-header -c n) do; incus exec $inst -- <do something in the instance>; done

• incus top could be enhances with --format and --columns options and no-waiting for user input.

[stgraber]

I've split up things into a couple more issues and I've got the rest sorted out in a PR.