rework and merge #521 and include further roomhumidity found in #330

Author: john30

src/vaillant/15.700.tsp

@@ -1063,6 +1063,14 @@ namespace _700 {
     value: tempv;
   }
 
+  /** Room humidity (Zone 1 only?) */
+  @id(MF, 0x24, 0x6, 0, 0x9, 1, 0x07, 0)
+  model RoomHumidity {
+    @maxLength(4)
+    ign: IGN;
+    value: percentv;
+  }
+
   /** night temperature zone 1 */
   @inherit(r_6, w_6)
   @ext(0x9, 0)

src/vaillant/15.ctlv2.tsp

@@ -987,6 +987,13 @@ namespace Ctlv2 {
     value: date;
   }
 
+  /** Room humidity Zone 1 */
+  @inherit(r_6)
+  @ext(0x28, 0)
+  model Z1RoomHumidity { // found in comment of #330
+    value: percentv;
+  }
+
   /** Absenktemperatur Zone 1 */
   @inherit(r_6, w_6)
   @ext(0x9, 0)
@@ -1168,6 +1175,13 @@ namespace Ctlv2 {
     value: date;
   }
 
+  /** Room humidity Zone 2 */
+  @inherit(r_7)
+  @ext(0x28, 0)
+  model Z2RoomHumidity { // found in comment of #330
+    value: percentv;
+  }
+
   /** Absenktemperatur Zone 2 */
   @inherit(r_7, w_7)
   @ext(0x9, 0)
@@ -1341,6 +1355,13 @@ namespace Ctlv2 {
     value: date;
   }
 
+  /** Room humidity Zone 3 */
+  @inherit(r_8)
+  @ext(0x28, 0)
+  model Z3RoomHumidity { // found in comment of #330
+    value: percentv;
+  }
+
   /** Absenktemperatur Zone 3 */
   @inherit(r_8, w_8)
   @ext(0x9, 0)