UV Meter: Add module tag and move to sensors folder

uv_meter_as7331/application.fam

@@ -1,11 +1,11 @@
 App(
     appid="uv_meter_as7331",
-    name="UV Meter",
+    name="[AS7331] UV Meter",
     apptype=FlipperAppType.EXTERNAL,
     entry_point="uv_meter_app",
     requires=["gui"],
     stack_size=2 * 1024,
-    fap_category="GPIO",
+    fap_category="GPIO/Sensors",
     sources=["*.c*", "!documentation"],
     fap_version="1.0",
     fap_icon="uv_meter.png",