[BLE] Add support for decrypting PVVX, BTHome v2 and Victron BLE frames (#2219)

* Changing WebUI to include display device name, and change it to select drop down rather than checkbox

* Fix mqttDiscovery to require WebUI and ESP32 for displayDeviceName

* Fix mqttDiscovery to require WebUI and ESP32 and ESP8266 for displayDeviceName and ForceDeviceName

* Changing WebUI to include display device name, and change it to select drop down rather than checkbox

* Fixes for WebUI and BT for supporting custom setting Display name

* Fixes for WebUI and BT for supporting custom setting Display name

* Move DISPLAY_DEVICE_NAME to User_config.h

* Update docs to include change for Display temperature

* Update docs to include change for Display temperature

* Fix minor cosmetic bug where devices were not linking in HA to the gateway using via_device as it should be the gateway mac address not name

* Add support for decrypting BTHome v2 frames

* Add support for decrypting BTHome v2 frames

* Add support for decrypting BTHome v2 frames

* BTHome fix issue with theengs-plug

* BTHome fix issue with theengs-plug

* Adding support for all BLE encrypted methods, support in UI and gatewayBT for specific MACAddress AES Keys

* Fix lint

* Fix build issue with theengs-bridge-v11 and esp32dev-all-test and revert the documentation to Units of measurement displayed

* Revert docs

* Revert displayDeviceName and Units of measurement

* Revert displayDeviceName and Units of measurement

* Revert displayDeviceName and Units of measurement

* Revert minor typo

* Revert minor typo

* Revert minor typo

* Bug in Victron as nonce should be 16 bytes

* Shortened the client side javascript for BLE key validation that is commented out due to image constrains on theengs-bridge-v11

main/User_config.h

@@ -652,6 +652,18 @@ bool isAduplicateSignal(uint64_t);
 void storeSignalValue(uint64_t);
 #endif
 
+#ifdef ZgatewayBT
+#  ifndef BLEDecryptor
+#    define BLEDecryptor true //true if decrypt encrypted PVVX or BTHome v2 service data
+#  endif
+#  ifndef JSON_BLE_AES_CUSTOM_KEYS
+#    define JSON_BLE_AES_CUSTOM_KEYS 256 // 42 byte BLE Custom Key * 6 rounded up to 256.
+#  endif
+#  ifndef BLE_AES
+#    define BLE_AES "00112233445566778899001122334455"
+#  endif
+#endif
+
 #define convertTemp_CtoF(c) ((c * 1.8) + 32)
 #define convertTemp_FtoC(f) ((f - 32) * 5 / 9)