feat: Support root command

Author: jcs090218

README.md

@@ -254,7 +254,7 @@ Commands to help you lint your packages:
 | `easky-lint-license`       | Run license linter        |
 | `easky-lint-org`           | Run org-lint on Org files |
 
-> 💡 These extenral tools are automatically installed in your sandbox!
+> 💡 These external tools are automatically installed in your sandbox!
 
 ### 🔗 Linking
 

easky.el

@@ -654,6 +654,12 @@ Arguments FORM-1, FORM-2 and FORM-3 are execution by each file action."
   (interactive)
   (easky--output-buffer (easky-command "locate")))
 
+;;;###autoload
+(defun easky-root ()
+  "Print the package directory."
+  (interactive)
+  (easky--output-buffer (easky-command "root")))
+
 ;;;###autoload
 (defun easky-compile ()
   "Byte-compile elc files."