Allow analytics vendor to print out deprecation info

[zhouyx]

Related to #24261 (comment)

We get a few requests from analytics vendor to upgrade their solution and deprecate old ones.
To help vendors with the migration process, we could print out the deprecation info to developers whenever there's such usage.

Proposal: add an deprecated field to the analytics jSON config.

For example, deprecated_vendor will have config like

{
  'deprecated': 'deprecated, please migrate to new_vendor'
}

Then whenever <amp-analytics type='deprecated_vendor'> is used, AMP will print out the specified console error.