fix path to template when installed via npm

I'm not sure why, buy app-root-path was not picking up the correct
path for this module when installed via NPM. Since we're already using
relative paths for imports, I don't think we gain much from using it
anyway, so I've changed to using path.resolve instead

package.json

@@ -29,10 +29,8 @@
     "clippy"
   ],
   "dependencies": {
-    "@types/app-root-path": "^1.2.4",
     "@types/archiver": "^0.15.37",
     "@types/express": "^4.0.35",
-    "app-root-path": "^2.0.1",
     "archiver": "^1.3.0",
     "xml": "^1.0.1"
   },