Run drush commands with --uri or with @alias

[jigarius]

Requirements

All sites in a multi-site don't always have site aliases. Many projects rely on drush's --uri option to run the command on the correct site. Thus, we need to allow users to choose whether they want to use the URI or Drush aliases.

Todo

• [x] If the user runs a command with --uri=@@uri, we replace the @@uri with individual site URIs before sending the command to Drush.
• [x] If the user runs a command with @@site, we replace the @@site with a site alias's name part, i.e. excluding the env part.
• [x] If the user runs a command without any of the above, we use --uri=@@uri by default.

[jigarius]

Though the feature works, a deeper thought and experimentation might be needed to determine whether it is safe to use the site's subdirectory name with --uri or if it is safer/better to use the site's hostname instead, i.e. keys of the $site array. Maybe a 3rd wildcard, @@host could be used?