v1.2.0 to add support to Nano_RP2040_Connect

### Releases v1.2.0

1. Add support to `Nano_RP2040_Connect`, `Nano_33_IoT`, using `MQTT`, `Secured MQTT`, `MQTT-over-WebSockets` or `Secured MQTT-over-WebSockets` with [`WiFiNINA_Generic` library](https://github.com/khoih-prog/WiFiNINA_Generic) library
2. Add [WiFiNINA examples](https://github.com/khoih-prog/MQTTPubSubClient_Generic/tree/main/examples/WiFiNINA)

Author: khoih-prog

library.properties

@@ -1,11 +1,13 @@
 name=MQTTPubSubClient_Generic
 version=1.2.0
+license=MIT
 author=hideakitai, Khoi Hoang <khoih.prog@gmail.com>
 maintainer=Khoi Hoang <khoih.prog@gmail.com>
 sentence=MQTT, MQTT_over_WebSockets and Secured MQTT_over_WebSockets Client for Arduino
 paragraph=Supporting nRF52, SAMD21, SAMD51, STM32F/L/H/G/WB/MP1, Teensy, SAM DUE, RP2040-based boards, besides ESP8266, ESP32 (ESP32, ESP32_S2, ESP32_S3 and ESP32_C3) and WT32_ETH01. Ethernet shields W5100, W5200, W5500, ENC28J60, Teensy 4.1 NativeEthernet/QNEthernet. Ethernet_Generic library is used as default for W5x00. Now with newly-added support to Nano_RP2040_Connect using WiFiNINA_Generic library and RP2040W using CYW43439 WiFi
 category=Communication
 url=https://github.com/khoih-prog/MQTTPubSubClient_Generic
+repository=https://github.com/khoih-prog/MQTTPubSubClient_Generic
 architectures=*
 depends=WiFiNINA_Generic, WiFiWebServer, EthernetWebServer, Ethernet_Generic, WebServer_WT32_ETH01, EthernetWebServer_STM32, WebSockets_Generic
 includes=MQTTPubSubClient_Generic.h