Add allowedSharedIsolatedProcess attribute.

Isolated services can use this attribute to indicate that they are ok
being bound into a shared isolated process. The default is false.

Bug: 243554393
Test: atest android.externalservice.cts.SharedIsolatedServiceTest
Change-Id: Ia4e4e60e801ad4d914ab159892411127e1163d91
6 files changed