Introduce NewApi lint checks

We are enabling NewApi lint check where the min sdk != compile sdk.
At the same time, we are introducing baseline files for existing
projects that fail this check in order to keep the build running.

At the very least we stop introducing new problems and teams might
realise of risks in their projects they were not aware of.

Bug: 150847901

Test: m lint-check
Change-Id: Icfa5eb98cc6b6708149f0c52fac8fc1440d9c3b0
Merged-In: Icfa5eb98cc6b6708149f0c52fac8fc1440d9c3b0