build: Allow NFC stack to be delivered as a mainline module or APK

These changes are necessary to allow NFC stack delivery to be properly
trunk stable flagged:
1. Delivered as NfcNci.apk and framework-nfc.jar for Android
U based builds (existing).
2. Delivered as com.android.nfcservices.apex which embeds NfcNci.apk &
framework-nfc.jar for Android V based builds (new).

Bug: 303286040
Test: Device boots up after flashing
Test: atest CtsNfcTestCases
Change-Id: Ib2170146d07763ff6c852ce810497ebe1ac2eead