[Library Manager] Please add Ethernet_Manager_STM32 Library

Thanks and Regards.

Features

This is the new library, adding to the current WiFiManager/Ethernet_Manager sets of libraries. It's designed to help you eliminate hardcoding your Credentials in STM32F/L/H/G/WB/MP1 boards using Ethernet shields (W5100, W5200, W5500, ENC28J60, built-in LAN8742A Ethernet). It's currently not supporting SSL. Will support soon.
You can update Credentials any time you need to change via Configure Portal. Data are saved in configurable locations in EEPROM.
DoubleDetectDetector feature to force Config Portal when double reset is detected within predetermined time, default 10s.
Configurable Config Portal Title to be either BoardName or default undistinguishable names.
Examples are redesigned to separate Credentials / Defines / Dynamic Params / Code so that you can change Credentials / Dynamic Params quickly for each device. Example MQTT_ThingStream_Ethernet_STM32 will demonstrate how to use the dynamic parameters, entered via Config Portal, to connect to ThingStream MQTT Server at mqtt.thingstream.io.

Initial coding to support STM32F/L/H/G/WB/MP1.
Provide support to W5x00, ENC28J60 and built-in LAN8742A Ethernet.
Supporting Ethernet, EthernetLarge, Ethernet2, Ethernet3, EthernetENC, UIPEthernet and STM32Ethernet Libraries

STM32 boards with built-in Ethernet LAN8742A such as :
- Nucleo-144 (F429ZI, F767ZI)
- Discovery (STM32F746G-DISCOVERY)
- All STM32 boards (STM32F/L/H/G/WB/MP1) with 32K+ Flash, with Built-in Ethernet
- See EthernetWebServer_STM32 Support and Test Results
STM32F/L/H/G/WB/MP1 boards (with 32+K Flash) running W5x00 or ENC28J60 shields)

Nucleo-144
Nucleo-64
Discovery
Generic STM32F0, STM32F1, STM32F2, STM32F3, STM32F4, STM32F7 (with 64+K Flash): x8 and up
STM32L0, STM32L1, STM32L4
STM32G0, STM32G4
STM32H7
STM32WB
STM32MP1
LoRa boards
3-D printer boards
Generic Flight Controllers
Midatronics boards