fix: specify cacheRoot for rebuilds (#191)

Sets the 'cacheRoot' of 'theia rebuild' to the root directory as is
done in the Theia repository. This is needed so that 'theia rebuild' is
able to appropriatly determine the state of the native builds.

fixes #190

Author: sdirix

templates/app-browser-package.json

@@ -21,7 +21,7 @@
   },
   "scripts": {
     "bundle": "yarn rebuild && theia build --mode development",
-    "rebuild": "theia rebuild:browser",
+    "rebuild": "theia rebuild:browser --cacheRoot ..",
     "start": "theia start",
     "watch": "yarn rebuild && theia build --watch --mode development"
   },

templates/app-electron-package.json

@@ -23,7 +23,7 @@
   },
   "scripts": {
     "bundle": "yarn rebuild && theia build --mode development",
-    "rebuild": "theia rebuild:electron",
+    "rebuild": "theia rebuild:electron --cacheRoot ..",
     "start": "theia start",
     "watch": "yarn rebuild && theia build --watch --mode development"
   },