Bug fix and extra::which searches PATH

• Previously, extra::which looked through hardcoded paths to confirm the existence of a program, now it searches through all directories in your PATH.
• Fixed a bug that resulted in package count failing to fetch and printing an error message on Gentoo.

fix: fail wrong component

@123marvin123 made a PR that addresses an obscure bug that would fail the battery element when packages fail to fetch.

extra::which() searches more paths

extra::which() now searches two more paths:

• /usr/local/bin
• /usr/local/sbin

Tweaks and changes

• Small under the hood tweaks
• Update documentation
• Changes to default and alt theme
• Capitalize first letter of shell (shorthand:ON)

Performance improvements

Macchina no longer relies on which or cat, improving execution time by ~5ms.

Bug fixes for DE and --debug

• Fixed a bug causing desktop environment not to appear in --debug in certain conditions.
• Fixed a bug causing desktop environment to still appear even though it is "Unknown"

NetBSD Full Support

This release brings full support for NetBSD, some bug fixes, and the possibility for elements to hide themselves if they fail to fetch system information.

Macchina's First Release!

I've been holding off this release for a while, because in my opinion, Macchina was not ready yet.
But I think it's time, 125 commits later, Macchina is ready and its first release is here!