Nickname a plugin or snippet

Zplugin supports loading a plugin or snippet with a nickname. Set the nickname through the id-as ice-mod. For example, one could try to load docker/compose from Github binary releases:

zplugin ice as"program" from"gh-r" mv"docker-compose* -> docker-compose"
zplugin light "docker/compose"

This registers plugin under ID docker/compose. Now the user could want to load a completion from Github repository (not the binary release catalog) also called docker/compose. The two IDs, both being docker/compose, will collide. The user can however resolve the conflict via id-as ice-mod by loading the completion under a nickname, for example "dc-completion":

zplugin ice as"completion" id-as"dc-completion"
zplugin load docker/compose

The completion is now seen under ID dc-completion. Issuing zplugin report dc-completion works, so as other Zplugin commands:

~ zplugin report dc-completion
Plugin report for dc-completion
-------------------------------

Completions:
_docker-compose [enabled]

This can be also used to nickname snippets. For example, you can use this to create handlers in place of long urls:

zplugin ice as"program" id-as"git-unique"
zplugin snippet https://github.com/Osse/git-scripts/blob/master/git-unique

zplugin delete git-unique will work, zplugin times will show git-unique instead of the URL.