Add support for atuin integration, Homebrew on Linux and eza as ls replacement (#17)

This is basically adding support for bazzite-cli usage.

---------

Co-authored-by: Vladimir Viatskii <vladimir@vtsk.online>
Reviewed-on: misc/zsh-config#17
Co-authored-by: Vladimir Viatskii <vladimir@hodakov.me>

zsh/apps/atuin.app.zsh

@@ -0,0 +1,5 @@
+atuin_init() {
+    eval "$(atuin init zsh)"
+}
+
+atuin_init