Restructure ci modules

[BD103]

Objective

• Currently all ci commands are in the subcommands module. This is problematic when you want to implement actually subcommands (such as cargo r -p ci -- doc check).
• All command modules include the _command suffix, which is redundant.

Solution

• Move commands modules into root crate folder.
• Merge contents of commands/mod.rs into main.rs.
• Move commands::subcommands module into commands module.
• Remove the _command suffix from all commands::subcommands modules.

[BD103]

Requesting a review from @MrGVSV, since they were the one who structured the ci tool in its current form and may provide insight / reasoning.

[MrGVSV]

LGTM! No particular reason I initially grouped it like that other than the fact that argh refers to them as "subcommands". I think what you have here is much cleaner though!

[BD103]

LGTM! No particular reason I initially grouped it like that other than the fact that argh refers to them as "subcommands". I think what you have here is much cleaner though!

Interesting! Maybe argh treats the main binary as a "command" and the arguments as "subcommands"? Either way, thanks for the insight :)