Add logo support for commands

[kodie]

Just like Application's logo function, Commands can have them now as well in the exact same way.

$app = new \Ahc\Cli\Application('Test App', '0.0.1');
$app->command('cmd')->logo('My ASCII Art');

Fixes #115

[adhocore]

thanks for the pull. should we also create corresponding issues for all the pulls?

[dimtrovich]

is it necessary to define the logo when executing a command? personally, I think the current implementation is sufficient. leaving the logo when calling the default command seems more normal to me.

[kodie]

is it necessary to define the logo when executing a command? personally, I think the current implementation is sufficient. leaving the logo when calling the default command seems more normal to me.

@dimtrovich As I mention in #115, currently, the logo doesn't show up for default commands, only for the built-in __default__ function. So if you set a logo and then use a default command, your logo would not be displayed. Also I like the freedom of being able to use a logo (possibly even unique logo) in any of the help screens (like maybe a different version of the ASCII art in each command if I so wished).

For example the logo showing in the screenshots I posted in #110 would not be possible without this PR as that is my default command I'm running help on.

[adhocore]

yea not super necessary but ok to have i guess as long as it doesn't mess up current working behavior or get on the way

btw pull needs rebase again :D

[adhocore]

@kodie i think instead of fixing this conflict branch, it is easier to branch off new from the latest main and cherry-pick or hand-pick changes on top

[kodie]

@adhocore I'll do that now and submit a new PR.