* feat(install): add --nocleanbuild to keep pkg/ and src/ directories for
AUR packages
Providing this flag during installation of AUR packages allows for keeping
the src/ and pkg/ directories produced my makepkg. If the user wants to
delete the directories, they can either select to cleanBuild in the
cleanmenu or run the installation without the --nocleanbuild flag (yay
will only remove the directories if the package is rebuilt)
* fix(completion): simplify description for --nocleanbuild in fish
This makes the description consistent with the descriptions in the
man page, --help, and zsh completion.
* refactor(install): Rename --nocleanbuild to --keepsrc
This naming scheme is more familiar to users since it is the name of the
flag in Paru.
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Co-authored-by: jguer <me@jguer.space>
