Add hook_help

I will work on it

Hi @charlliequadros - thanks for this!

One flag from phpcs please: https://git.drupalcode.org/issue/menu_css_names-3453023/-/jobs/1804541

--------------------------------------------------------------------------------
FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
--------------------------------------------------------------------------------
 81 | WARNING | Avoid backslash escaping in translatable strings when possible,
    |         | use "" quotes instead
    |         | (Drupal.Semantics.FunctionT.BackslashSingleQuote)

Hi @charlliequadros,

I reviewed the MR !15.
Looks good to me, It adds a help page for the module.
Just a small typo in the help page description, please update theme\'s configuration to theme's configuration
Attached is the SS for reference.

Moving to NW.

Thanks @Diwakar07

Ive made a couple of minor tweaks to this, looks good to me though, Menu CSS names shows in admin/help and is representative of the modules functionality.

Merging.