feat: add doxygen headers to all functions

Kconfig

@@ -1,4 +1,47 @@
 menu "Home Assistant MQTT Options"
+
+config WIFI_SSID
+    string "WiFi SSID"
+    default "ItenIOT"
+    help
+      The SSID of the WiFi network to connect to.
+
+config WIFI_PASSWORD
+    string "WiFi Password"
+    default "DasPferd"
+    help
+      The password for the WiFi network. Leave empty if the network is open.
+
+config NET_DHCP
+    bool "Enable DHCP"
+    default y
+    help
+      Enable DHCP for the network interface. If disabled, static IP configuration must be provided.
+
+config NET_IP_ADDR
+    string "Static IP address"
+    default "192.168.1.77"
+    help
+      Static IP address to use if DHCP is disabled. Must be in the same subnet as the router.
+
+config NET_IP_MASK
+    string "Static IP netmask"
+    default "255.255.255.0"
+    help
+      Static IP netmask to use if DHCP is disabled. Must be in the same subnet as the router.
+
+config NET_IP_GATEWAY
+    string "Static IP gateway"
+    default "192.168.1.1"
+    help
+      Static IP gateway to use if DHCP is disabled. This is usually the IP address of the router.
+
+config NET_DNS_SERVER
+    string "Static IP DNS server"
+    default "192.168.1.1"
+    help
+      Static IP DNS server to use if DHCP is disabled. This is usually the IP address of the router.
+
 config HA_MQTT_BROKER_HOSTNAME
     string "MQTT broker hostname"
     default "homeassistant.local"