Add lint check for new permission requirements

New permissions added to platform manifest need to have the
`android:featureFlag` attribute so that the test can properly test
between diverging releases.

LOW_COVERAGE_REASON=TEST_ONLY
Relnote: Test only, no functional changes
Flag: TEST_ONLY
Test: This test before I add baseline
Bug: 333749198
Change-Id: I65878edb945b308d5485de0abaefc872d841a977
6 files changed