Initial LiveSync is extremly slow if the project has thousands of files

[Fatme]

tns livesync --watch always syncs all files on first execution.

We've considered some ideas for optimizations:

• Create and upload archive instead to execute adb push for each file.
• Compute file hashes and upload only the changed files.

Here is the repo project https://github.com/NativeScript/sample-ng-todomvc

[Fatme]

related to this #913

[atanasovg]

Let's see whether the problem is present when files are bundled with WebPack