Add heapbytes/heapbytes-zsh theme

Closes heapbytes/heapbytes-zsh#2

Signed-off-by: Joe Block <[email protected]>

README.md

@@ -1896,6 +1896,7 @@ If you're using [Antigen](https://github.com/zsh-users/antigen), you can test th
 - [haribo](https://github.com/haribo/omz-haribo-theme) - Simple `git` status + timestamp in prompt.
 - [hcompact](https://github.com/fusion809/zsh-theme) - Displays time, OS (including distro if on Linux), directory and whether running as root.
 - [headline](https://github.com/Moarram/headline) - A responsive ZSH theme featuring Git status information and a colored line above the prompt.
+- [heapbytes](https://github.com/heapbytes/heapbytes-zsh) - Includes decorators for current directory, tun0 ip if on a VPN, wlan ip when not on VPN and `git` information.
 - [heart](https://github.com/gko/heart) - Heart themed prompt for light backgrounds.
 - [hedroed-bureau](https://github.com/Hedroed/hedroed-bureau.zsh-theme) - Based on [bureau](https://github.com/ohmyzsh/ohmyzsh/wiki/Themes#bureau), with added `git` status decorations and `npm` status.
 - [helb](https://github.com/helb/helb.zshtheme) - Loosely based on Gentoo's old `bash` theme. Includes `git` information, return value of last command, and uses different username color and prompt char for users (`$`) and root (`#`).