* Fixes BLE data printing

BLE data has no '\0' terminator, therefore it can't be printed as a regular C string.
This fix just prints the BLE data based on its length.

* Simplify printing to a single call

Pull request #4999 added setMTU function to BLEClient.cpp/.h, this line provides implementation of this added functionality to the BLE client example to resolve cases in which data from notifyCallback exceeds 20 characters (3 bytes for command type and attribute ID, 20 bytes for attribute data (char*)pData).

fix typo

* Set IDF to v3.2

* Remove BLE submodule

* Add BLE lib source

* Update Camera example to support OV3660