[LSC] Add LOCAL_LICENSE_KINDS to frameworks/av

Added SPDX-license-identifier-Apache-2.0 to:
  media/tests/SampleVideoEncoder/app/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: Ie0a1d4beef9738d7effa35f8225f30d6d3835494