Automatically add paths in ~/opt/ to your $PATH.
This will search your ~/opt/ directory for subpaths, or subpaths containing
a bin directory, and add these directories to your $PATH if they are not
already listed.
For example, if you have multiple projects built in separate prefixes of
~/opt/, this will find them and add them to $PATH without needing to be
explicitly listed in your .zshrc:
$ echo $PATH
/home/user/opt/znc/bin:/home/user/opt/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
zsh-opt-path is copyright 2022 Amethyst Reese and licensed under the MIT license.