Add Frequency channel type. Need for Power Meter KWS-302WF (#1974)

https://www.elektroda.com/rtvforum/topic4075755.html

src/new_pins.c

@@ -1431,6 +1431,7 @@ const char *ChannelType_GetUnit(int type) {
 	case ChType_Power_div10:
 	case ChType_Power_div100:
 		return "W";
+	case ChType_Frequency:
 	case ChType_Frequency_div10:
 	case ChType_Frequency_div100:
 	case ChType_Frequency_div1000:
@@ -1485,6 +1486,7 @@ const char *ChannelType_GetTitle(int type) {
 	case ChType_Power_div10:
 	case ChType_Power_div100:
 		return "Power";
+	case ChType_Frequency:
 	case ChType_Frequency_div10:
 	case ChType_Frequency_div100:
 	case ChType_Frequency_div1000:
@@ -2426,6 +2428,7 @@ const char* g_channelTypeNames[] = {
 	"ReadOnlyEnum",
 	"Current_div10",
 	"Illuminance_div10",
+	"Frequency",
 	"error",
 	"error",
 	"error",

src/new_pins.h

@@ -1134,6 +1134,13 @@ typedef enum channelType_e {
 	//chandetail:"file":"new_pins.h",
 	//chandetail:"driver":""}
 	ChType_Illuminance_div10,
+	//chandetail:{"name":"Frequency",
+	//chandetail:"title":"TODO",
+	//chandetail:"descr":"For TuyaMCU power metering. Not used for BL09** and CSE** sensors.",
+	//chandetail:"enum":"ChType_Frequency",
+	//chandetail:"file":"new_pins.h",
+	//chandetail:"driver":""}
+	ChType_Frequency,
 	//chandetail:{"name":"Max",
 	//chandetail:"title":"TODO",
 	//chandetail:"descr":"This is the current total number of available channel types.",