Better Invalid Manifest Error

[grant]

Expected Behavior

Clasp should provide a nice error when there's a clasp push error due to the manifest being broken.

Actual Behavior

Push failed. Errors:
Request contains an invalid argument.
Files to push were:
└─ appsscript.json
└─ index.ts

Steps to Reproduce the Problem

Have a manifest like this (with $schema):

{
  "$schema": "http://json.schemastore.org/appsscript",
  "timeZone": "America/New_York",
  "dependencies": {
  },
  "exceptionLogging": "STACKDRIVER"
}