feat(starship): create plugin (#10947)

Co-authored-by: Carlo Sala <carlosalag@protonmail.com>

plugins/starship/starship.plugin.zsh

@@ -0,0 +1,8 @@
+# ignore oh-my-zsh theme
+unset ZSH_THEME
+
+if (( $+commands[starship] )); then
+  eval "$(starship init zsh)"
+else
+  echo '[oh-my-zsh] starship not found, please install it from https://starship.rs'
+fi