[MEM] Enable PSRAM on Theengs Bridge v1.1 (ESP32-WROVER-IE) (#2303)

- Switch Ethernet RMII clock from GPIO16 to GPIO0 output mode,
  freeing GPIO16 for PSRAM chip select (SPICS1) on WROVER-IE
- Enable PSRAM with QIO flash mode and cache workaround flags
- Add PHY pre-power support for ETH_CLOCK_GPIO0_IN mode
- Report PSRAM status and free memory in SYS MQTT topic

Requires Theengs lib-builder update: remove LIBTIME from IRAM
cache workaround (CONFIG_SPIRAM_CACHE_LIBTIME_IN_IRAM=n) to
free ~3.5KB IRAM for the -mfix-esp32-psram-cache-issue flag.

Tested on Theengs Bridge v1.1: 4MB PSRAM detected, Ethernet
100Mbps on GPIO0, BLE scanning nominal.

Co-authored-by: Florian <1technophile@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

platformio.ini

@@ -180,7 +180,7 @@ monitor_speed = 115200
 [com]
 esp8266_platform = espressif8266@4.2.1
 esp32_platform =  https://github.com/pioarduino/platform-espressif32/releases/download/55.03.33/platform-espressif32.zip
-esp32_platform_packages = framework-arduinoespressif32-libs @ https://github.com/theengs/esp32-arduino-lib-builder/releases/download/0.1.0/esp32-arduino-libs.tar.gz
+esp32_platform_packages = framework-arduinoespressif32-libs @ https://github.com/theengs/esp32-arduino-lib-builder/releases/download/0.1.3/esp32-arduino-libs.tar.gz
 esp32_solo_platform = https://github.com/tasmota/platform-espressif32/releases/download/2023.02.00/platform-espressif32.zip
 atmelavr_platform = atmelavr@3.3.0