os: starship prompt in command-line shell

resolve: #34

Author: practicalli-johnny

CHANGELOG.md

@@ -17,6 +17,7 @@
 - linux: link to sudo setup page on Debian Linux wiki
 - dev: add scheduled stale issue & pull request check (monthly)
 - os: install sudo & add user to sudo group
+- os: starship prompt in command-line shell
 
 ### Changed