Fixes & memory optimizations (#540)

- Disable BlueTooth driver by default, to ensure it doesn't allocate memory
- Update BlueTooth settings app behaviour to make sure it starts/stops the devices
- Disable SPI RAM usage for ST7789 as it broke App Hub
- Reduce T-Display and T-Deck display buffers from 1/3rd to 1/10th of resolution
- Enabled dynamic buffers for MbedTLS to optimize memory
- TLS 1.3 did not work with dynamic buffers: downgrade to 1.2 for now
- WiFi is now enabled from the Boot app callback to the WiFi service, instead of the WiFi service start() function. This avoids a lockup when WiFi is started by the service while the Boot app is updating the WiFi settings.

Buildscripts/sdkconfig/default.properties

@@ -9,7 +9,8 @@ CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
 CONFIG_FREERTOS_PLACE_SNAPSHOT_FUNS_INTO_FLASH=y
 CONFIG_RINGBUF_PLACE_FUNCTIONS_INTO_FLASH=y
 # EmbedTLS
-CONFIG_MBEDTLS_SSL_PROTO_TLS1_3=y
+# Use TLS 1.2 because 1.3 conflicts with MbedTLS dynamic buffer
+CONFIG_MBEDTLS_SSL_PROTO_TLS1_2=y
 # LVGL
 CONFIG_LV_USE_USER_DATA=y
 CONFIG_LV_USE_FS_STDIO=y
@@ -40,3 +41,17 @@ CONFIG_WL_SECTOR_MODE_SAFE=y
 CONFIG_WL_SECTOR_MODE=1
 # Allow new i2c_master API (used by Tab5Keyboard for LP_I2C_NUM_0) to coexist with legacy i2c driver
 CONFIG_I2C_SKIP_LEGACY_CONFLICT_CHECK=y
+# Wi-Fi memory optimizations
+CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM=3
+CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM=5
+CONFIG_ESP_WIFI_STATIC_TX_BUFFER=y
+CONFIG_ESP_WIFI_TX_BUFFER_TYPE=0
+CONFIG_ESP_WIFI_STATIC_TX_BUFFER_NUM=5
+CONFIG_ESP_WIFI_CACHE_TX_BUFFER_NUM=5
+CONFIG_ESP_WIFI_STATIC_RX_MGMT_BUFFER=y
+CONFIG_ESP_WIFI_DYNAMIC_RX_MGMT_BUF=0
+CONFIG_ESP_WIFI_RX_MGMT_BUF_NUM_DEF=5
+CONFIG_ESP_WIFI_AMPDU_TX_ENABLED=y
+CONFIG_ESP_WIFI_TX_BA_WIN=5
+CONFIG_ESP_WIFI_AMPDU_RX_ENABLED=y
+CONFIG_ESP_WIFI_RX_BA_WIN=5