v1.10.3 to use Ethernet_Generic library, to add support to SPI2 for ESP32 and SPI1 for RP2040, to use new waitForLink() function of QNEthernet, to add examples and rewrite all the examples to support new features, etc.

[khoih-prog]

Release v1.10.3

1. Use new Ethernet_Generic library as default for W5x00.
2. Add support to SPI2 for ESP32
3. Add support to SPI1 for RP2040 using arduino-pico core
4. Rewrite all the examples to support new features
5. Use new waitForLink() function of Teensy 4.1 QNEthernet
6. Update Packages' Patches

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This discussion was created from the release v1.10.3 to use Ethernet_Generic library, to add support to SPI2 for ESP32 and SPI1 for RP2040, to use new `waitForLink()` function of QNEthernet, to add examples and rewrite all the examples to support new features, etc..