Support for NFC

### Description

I would like to create a inventory management system using MAUI; warehouses currently use a mixture of Barcodes, QR codes, RFID and NFC tagged products and/or stillages. It would be good if MAUI provided as part of the essentials namespace NFC support for devices.

### Public API Changes

var nfc = new NFC();
nfc.event+=processEvent;
await nfc.ListenAsync( );

### Intended Use-Case

holding the device up to/close to a NFC tag would trigger the event with the event args containing the NFC tag data

Start by reviewing the existing .NET MAUI Essentials APIs and how device-specific capabilities are exposed. The issue names no files or tests; completion would require an agreed NFC API that can listen for tags and expose their data through event arguments across supported devices.

Written by the indexing model from the issue text.