PC321TY: use a more generic name, add names to linked products

custom_components/tuya_local/devices/pc321ty_energy_meter.yaml

@@ -1,7 +1,9 @@
-name: PC321-TY power clamp
+name: Power clamp meter
 products:
   - id: r64livttuufctble
+    name: PC321-TY
   - id: 9rjjf6rdkca9woju
+    name: PC321-TY 80A
 primary_entity:
   entity: sensor
   class: energy