New env crowpanel_50_companion_radio_touch for the 800x480 ST7262 RGB panel,
GT911 touch and an SX1262 in the wireless slot. Board quirks follow Camillia-MT:
14 MHz pixel clock, internal-RAM draw band, PCA9557 (V1.0) / MCU (V1.1+)
backlight controller detection with GT911 reset at 0x5D or 0x14, NSS on GPIO8
(V1.2+), no SD/GPS/battery. Large-screen layouts and UI-size fonts; browser
file transfer to the internal tiles partition. Added to the upload helper,
release script, flasher manifests, site, DEVICES.md, README and NOTICE.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
