Adds new integration [ndesgranges/simple-plant] (#3367)

* Added simple_plant integration (and it's custom card integration)

* Removed simple_plant_card, will make a separate PR

---------

Co-authored-by: Joakim Sørensen <joasoe@proton.me>

integration

@@ -956,6 +956,7 @@
   "nathanmarlor/foxess_modbus",
   "Nazze/ha_best_bottrop_garbage_collection",
   "nbogojevic/homeassistant-midea-air-appliances-lan",
+  "ndesgranges/simple-plant",
   "ndom91/homeassistant-checkly",
   "Nedevski/hass_kat_bulgaria",
   "neggert/hass-egauge",
@@ -1434,4 +1435,4 @@
   "ZsBT/hass-w1000-portal",
   "zubir2k/homeassistant-esolatgps",
   "zubir2k/homeassistant-esolattakwim"
-]
+]