add EVB_LN822x  iot exporer demo

add nationz N32G4XM_STB board support

fix l073 lorawankeil  project

delete some unused bsp files to reduce code size

1. implemented HAL_StatusTypeDef HAL_FLASH_ReadWord(uint32_t Address, uint32_t* Data); and HAL_StatusTypeDef HAL_FLASH_ReadHalfWord(uint32_t Address, uint16_t* Data); which allows user to read the internal FLASH (with out read protection)

2. implemeted device_config struct to store device configurations, e.g. magnetometer fullscale, report period, etc.

3. added demonstration code of using flash reading apis in lora_demo.c, in which the configuration sent from the cloud is stored into the internal Data EEPROM bank1, and each time when the device is booted, the configurations would be loaded from the Data EEPROM and used to initialize the application.

1. project, see TencentOS-tiny\board\RHF0M0E5_STM32WLE5xx\KEIL\hello_world

memset(decrypted_text,  0,  sizeof(encrypted_text)); 
->
memset(decrypted_text,  0,  sizeof(decrypted_text));

2. Added the Keil Workspace
3. Changed the hello_world.c for RT1050
Signed-off-by: NHoward Liu <howardliu7874@hotmail.com>

Signed-off-by: NHoward Liu <howardliu7874@hotmail.com>

add NXP RT1052 support

add ALIENTEK_W601 wifi support

first commit for opensource