Added pzemdc reset energy action (#4481)

* remove unused sensors on pzemdc

* add reset energy action for pzemdc

* fix lint errors

* remove trailing space on pzemdc.h

* make method reset_energy of pzemdc public

* Apply suggestions from code review

---------

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

tests/test3.yaml

@@ -579,6 +579,7 @@ sensor:
     power_factor:
       name: PZEMAC Power Factor
   - platform: pzemdc
+    id: pzemdc1
     voltage:
       name: PZEMDC Voltage
     current:
@@ -925,6 +926,11 @@ binary_sensor:
     on_press:
       then:
         - pzemac.reset_energy: pzemac1
+  - platform: template
+    id: pzemdc_reset_energy
+    on_press:
+      then:
+        - pzemdc.reset_energy: pzemdc1
 
   - platform: vbus
     model: deltasol_bs_plus