[LSC] Add LOCAL_LICENSE_KINDS to packages/apps/Launcher3

Added SPDX-license-identifier-Apache-2.0 to:
  Android.bp
  Android.mk
  robolectric_tests/Android.mk
  tests/Android.mk

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work

Change-Id: Ia348bba8ca075e87070ff8a605ca79ffcbea9982
Merged-in: Ia348bba8ca075e87070ff8a605ca79ffcbea9982