Add ITAxReal/xbira theme

Add `ITAxReal/xbira` theme based on bira theme.

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

README.md

@@ -2444,6 +2444,7 @@ If you're using [Antigen](https://github.com/zsh-users/antigen), you can test th
 - [wynwyn](https://github.com/thaffenden/wynwyn.zsh-theme) - A theme that aims to show you the information you need when you need it. `wynwyn` takes inspiration from the default theme `avit` and the excellent [Spaceship prompt](https://github.com/denysdovhan/spaceship-prompt).
 - [xandermute](https://github.com/SoYoureAWaffleMan/xandermute-oh-my-zsh-theme/) - Minimalist theme with `git` and current directory decorations.
 - [xavi](https://github.com/onthedock/xavi.zsh-theme) - Modified version of the [gnzh](https://github.com/ohmyzsh/ohmyzsh/blob/master/themes/gnzh.zsh-theme) theme with emoji decorations for `git` status and current directory.
+- [xbira](https://github.com/ITAxReal/xbira) - Based on [bira](https://github.com/ohmyzsh/ohmyzsh/blob/master/themes/bira.zsh-theme), includes decorators for `git` status, user@hostname, exit status of last command run and the current directory.
 - [xlk-simple](https://github.com/xuelingkang/xlk-simple-zsh-theme) - Simple theme with `git` decorations.
 - [xm](https://github.com/Shiaoming/xm) - Theme for dark terminals. Has `git` decorations.
 - [xor](https://github.com/xor3n/xor-zsh-theme) - Self described as minimalistic and 'feature-poor', includes `git` decorations.