ThinkNode M7 (#8077)

* ThinkNode G3, ETH support WIP

* ThinkNode G3, ETH support WIP

* ThinkNode G3, ETH support WIP

* ThinkNode G3, ETH support WIP

* ThinkNode G3, ETH support WIP

* ThinkNode G3, ETH support WIP

* ThinkNode G3, ETH support WIP

* rename variant and add guard macros

* older G3 operational. M7 next.

* Split out G3 and M7 to different variants. Completely new PCB design. The G3 stays on 'PRIVATE_HW'

* Define button behaviour and use all of the device flash

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: caveman99 <25002+caveman99@users.noreply.github.com>
Co-authored-by: Jonathan Bennett <jbennett@incomsystems.biz>

src/platform/esp32/main-esp32.cpp

@@ -28,7 +28,7 @@
 #if !defined(CONFIG_IDF_TARGET_ESP32S2) && !MESHTASTIC_EXCLUDE_BLUETOOTH
 void setBluetoothEnable(bool enable)
 {
-#ifdef USE_WS5500
+#if defined(USE_WS5500) || defined(USE_CH390D)
     if ((config.bluetooth.enabled == true) && (config.network.wifi_enabled == false))
 #elif HAS_WIFI
     if (!isWifiAvailable() && config.bluetooth.enabled == true)