Set ESP-IDF to 3.2 (#2662)

* Set IDF to v3.2

* Remove BLE submodule

* Add BLE lib source

* Update Camera example to support OV3660

Author: me-no-dev

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "libraries/BLE"]
-	path = libraries/BLE
-	url = https://github.com/nkolban/ESP32_BLE_Arduino.git
 [submodule "libraries/AzureIoT"]
 	path = libraries/AzureIoT
 	url = https://github.com/VSChina/ESP32_AzureIoT_Arduino

boards.txt

@@ -9,31 +9,7 @@ menu.PSRAM=PSRAM
 menu.Revision=Board Revision
 
 ##############################################################
-
-esp32cam.name=AI Thinker ESP32-CAM
-
-esp32cam.upload.tool=esptool_py
-esp32cam.upload.maximum_size=3145728
-esp32cam.upload.maximum_data_size=327680
-esp32cam.upload.wait_for_upload_port=true
-esp32cam.upload.speed=460800
-
-esp32cam.serial.disableDTR=true
-esp32cam.serial.disableRTS=true
-
-esp32cam.build.mcu=esp32
-esp32cam.build.core=esp32
-esp32cam.build.variant=esp32
-esp32cam.build.board=ESP32_DEV
-esp32cam.build.f_cpu=240000000L
-esp32cam.build.flash_size=4MB
-esp32cam.build.flash_freq=80m
-esp32cam.build.flash_mode=dio
-esp32cam.build.boot=qio
-esp32cam.build.partitions=huge_app
-esp32cam.build.defines=-DBOARD_HAS_PSRAM -mfix-esp32-psram-cache-issue
-esp32cam.build.code_debug=0
-
+### DO NOT PUT BOARDS ABOVE THE OFFICIAL ESPRESSIF BOARDS! ###
 ##############################################################
 
 esp32.name=ESP32 Dev Module
@@ -3449,4 +3425,30 @@ frogboard.menu.DebugLevel.verbose.build.code_debug=5
 
 ##############################################################
 
+esp32cam.name=AI Thinker ESP32-CAM
+
+esp32cam.upload.tool=esptool_py
+esp32cam.upload.maximum_size=3145728
+esp32cam.upload.maximum_data_size=327680
+esp32cam.upload.wait_for_upload_port=true
+esp32cam.upload.speed=460800
+
+esp32cam.serial.disableDTR=true
+esp32cam.serial.disableRTS=true
+
+esp32cam.build.mcu=esp32
+esp32cam.build.core=esp32
+esp32cam.build.variant=esp32
+esp32cam.build.board=ESP32_DEV
+esp32cam.build.f_cpu=240000000L
+esp32cam.build.flash_size=4MB
+esp32cam.build.flash_freq=80m
+esp32cam.build.flash_mode=dio
+esp32cam.build.boot=qio
+esp32cam.build.partitions=huge_app
+esp32cam.build.defines=-DBOARD_HAS_PSRAM -mfix-esp32-psram-cache-issue
+esp32cam.build.code_debug=0
+
+##############################################################
+