Add range-based Parcel.hasFileDescriptors(offset, length)

To be used by lazy values in bundle. I ended up opening up as public API
for apps to use it too because I saw no reason not to, can change if
folks prefer it to be @hide though.

Test: atest -d android.os.cts.ParcelTest android.os.cts.BundleTest android.os.BundleTest android.os.ParcelTest
Bug: 195622897
Change-Id: I7bf580f94313669fe67998b32b2723544c594cde