Prepare nfc_rfid for fap catalog (#2)

* Prepare nfc_rfid for fap catalog

* Rename catalog folder

nfc_rfid_detector/.catalog/README.md

@@ -0,0 +1,7 @@
+Just run the app and hold your Flipper Zero near the reader. The following icons may appear on the screen:
+
+- NFC icon - the reader uses the NFC technology, operating at 13.56 MHz.
+- RFID icon - the reader uses the RFID technology, operating at 125 kHz. For RFID readers, the app displays the estimated frequency the reader operates at.
+- Both NFC and RFID icons - the reader uses both technologies.
+
+

nfc_rfid_detector/application.fam

@@ -10,4 +10,6 @@ App(
     fap_icon="nfc_rfid_detector_10px.png",
     fap_category="Tools",
     fap_icon_assets="images",
+    fap_description="Identify the reader type: NFC (13 MHz) and/or RFID (125 KHz).",
+    fap_author="SkorP",
 )