Support for M5Stack Camera B Model

[oscaracena]

Its easy to add support for this camera (which has 4 MiB of PSRAM). Just, add a new pinout definition (in ESP32_Camera_Sender/src/main.cpp):

#elif defined(CAMERA_MODEL_M5STACK_MODEL_B)
#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     22
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

And in platformio.ini, set the flags to enable the PSRAM:

build_flags =
        -DM5STACK
        -DBOARD_HAS_PSRAM

Cheers!