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* feat: add WIZnet W5500-EVB-Pico2 + E22P-868M30S variant Adds a community variant for the WIZnet W5500-EVB-Pico2 development board (https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) paired with an external EBYTE E22P-868M30S LoRa module. This is the hardware twin of variants/rp2350/diy/pico2_w5500_e22 — same LoRa pinout, same W5500 pin mapping — and reuses its variant.h verbatim via `-I variants/rp2350/diy/pico2_w5500_e22`. No duplicated pinout file. Two differences vs pico2_w5500_e22 justify the separate env: 1. Board target: `wiznet_5500_evb_pico2` (2 MB flash) instead of `rpipico2` (4 MB flash). The WIZnet PCB ships with a smaller Q-SPI chip than a stock Pi Pico 2. Selecting the correct board makes the linker fail fast on overflow instead of producing a UF2 that gets silently truncated when flashed to the device. 2. W5500 PHY is integrated on the PCB (hard-wired SPI0 GP16-20) rather than supplied as an external module the user wires manually. The E22P-868M30S uses a single combined RFEN pin (LNA + PA enable) instead of the older E22-900M30S's split RXEN/TXEN pins. RFEN is held HIGH at all times via `SX126X_ANT_SW 3`; TX switching still uses the on-module DIO2 → TXEN bridge through `SX126X_DIO2_AS_RF_SWITCH`. Build verified: wiznet_5500_evb_pico2_e22p SUCCESS (RAM 19.2%, Flash 65.6% of 1.5 MB partition / 2 MB chip). * style(wiznet-evb-pico2-e22p): prettier-format README tables --------- Co-authored-by: Ben Meadors <benmmeadors@gmail.com>