Move grantPermission to permission manager

Last major movement of permission logic from the
package manager to the permission manager.

Bug: 63539144
Test: Manual. Builds and runs
Test: cts-tradefed run commandAndExit cts-dev -m CtsAppSecurityHostTestCases -t android.appsecurity.cts.PermissionsHostTest
Test: cts-tradefed run commandAndExit cts-dev -m CtsPermissionTestCases
Test: cts-tradefed run commandAndExit cts-dev -m CtsPermission2TestCases
Test: bit FrameworksServicesTests:com.android.server.pm.PackageManagerSettingsTests
Change-Id: I3225405fad4334917b8df0b08bb1936a58744480