Add configuration examples for various devices and functionalities

- Introduced multivent ventilation configuration for managing multiple zones.
- Added PID heating batteries configuration for temperature control.
- Created relay GPIO switch configuration for controlling relays.
- Implemented RGBW LED strip configuration for lighting control.
- Added Modbus CO2 sensor configuration for environmental monitoring.
- Introduced Sonoff S26 humidity controller example for humidity management.
- Created sprinkler irrigation configuration for garden management.
- Added thermostat on/off relay configuration for heating and cooling control.
- Implemented ventilation fan monitoring configuration for performance tracking.
- Added core concepts documentation for LightHub, detailing items, commands, and execution objects.

config-examples/sonoff_s26_humidity_controller_example.json

@@ -0,0 +1,25 @@
+{
+  "syslog":["95.31.43.9"],
+  "items": {
+    "ledhum":[6,-13],
+    "reghum": [13, [
+      [50, 10, 0, 60, 250, 200], [{"item": "relayhum"}, {"item":"ledhum"}]
+    ], 30, 12],
+    
+    "relayhum": [16, [12, 1200], 255, 2]
+    },
+"in":{
+          "0":{"T":0,
+                "click":{ "item":"reghum","icmd":"TOGGLE"},
+                "dclick":{ "emit":"myhome/light-d2/light","ecmd":"TOGGLE"}
+              },
+          
+          "3":{"T":4,
+            "temp":{"emit":"plugtemp"},
+            "hum":{"item":"reghum/val","emit":"plughum"}
+              }
+          
+         },
+
+  "mqtt":["plug00","192.168.88.2"]
+}