feat(admin): Improve DX for deploying admin externally (#3418)

* init deploy command

* add include flag

* add 'shortcut' flag

* add dev command, fix var replacement, change default behaviour

* cleanup params of build command

* fix defaults when using the plugin to serve admin

* add changeset

* fix globals

* update README

* throw error on no build found

---------

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/admin/package.json

@@ -28,11 +28,13 @@
   "dependencies": {
     "@medusajs/admin-ui": "*",
     "commander": "^10.0.0",
+    "dotenv": "^16.0.3",
     "express": "^4.17.1",
     "fs-extra": "^11.1.0",
     "medusa-core-utils": "*",
     "ora": "5.4.0",
-    "picocolors": "^1.0.0"
+    "picocolors": "^1.0.0",
+    "ts-dedent": "^2.2.0"
   },
   "peerDependencies": {
     "@medusajs/medusa": "*"