auth: move submodules to real dependencies

packages/auth/.gitmodules

-[submodule "vendor/common"]
-	path = vendor/common
-	url = git@gitlab.tugraz.at:VPU/WebComponents/Common.git

packages/auth/package.json

@@ -29,7 +29,7 @@
     "rollup-plugin-json": "^4.0.0",
     "rollup-plugin-serve": "^1.0.1",
     "rollup-plugin-terser": "^6.1.0",
-    "vpu-common": "file:./vendor/common"
+    "vpu-common": "^1.0.0"
   },
   "dependencies": {
     "@open-wc/scoped-elements": "^1.1.1",

common @ 8c466476

-Subproject commit 8c46647624ad9d91316a4bad168d49221884efe2