Add Shelly 1PM as PV meter (#3227)

templates/definition/meter/shelly-pm1.yaml

@@ -0,0 +1,26 @@
+template: shelly-1pm
+products:
+  - brand: Shelly
+    description:
+      generic: 1PM
+group: sockets
+params:
+  - name: usage
+    choice: ["pv"]
+  - name: host
+  - name: user
+    required: false
+  - name: password
+    required: false
+    mask: true
+render: |
+  type: custom
+  power:
+    source: http
+    uri: http://{{ if ne .user "" }}{{ .user }}:{{ .password }}@{{ end }}{{ .host }}/status
+    jq: .meters | map(.power) | add
+  energy:
+    source: http
+    uri: http://{{ if ne .user "" }}{{ .user }}:{{ .password }}@{{ end }}{{ .host }}/status
+    jq: .meters | map(.total) | add
+    scale: 0.0000166666666666667

templates/docs/meter/shelly-1pm_0.yaml

@@ -0,0 +1,13 @@
+product:
+  brand: Shelly
+  description: 1PM
+  group: Steckdosen
+render:
+  - usage: pv
+    default: |
+      type: template
+      template: shelly-1pm
+      usage: pv
+      host: 192.0.2.2 # IP-Adresse oder Hostname
+      user: # Benutzerkonto (bspw. E-Mail Adresse, User Id, etc.) # Optional
+      password: # Passwort des Benutzerkontos (bei führenden Nullen bitte in einfache Hochkommata setzen) # Optional