1Password's shell plugin integration is nice, but it currently uses
aliases to run various CLI tools through `op plugin run -- <tool>`.
This leads to shell completion for those tools not working correctly in
bash and zsh.
While zsh can work around that with `setopt completealiases`, it causes
shorthand aliases to break instead. Hence the only reasonable solution
is to replace the aliases with shell functions.
Previously I had manually been editing ~/.config/op/plugins.sh replacing
the aliases with functions. This is an automated solution that generates
unalias calls and function definitions for all 1Password aliases. It is
also efficient by means of writing the generated functions to a cache
file which is only updated when needed.