1.update keil default project
2.add rtduino aht10 demo

* sync and update

* [bsp][lpc55sxx] add support for LPC55S16

* [bsp][lpc55s16] formating LPC55S16 driver

* [bsp][lpc55sxx] add support of LPC5528/LPC55S28

1. add .ignore_format
2. add support of LPC55S28
3. fix LPC55S69 keil comiple error
3. refine README

* [bsp][lpc55sxx]

1. remove cmake file
2. formating code using rt-thread formating tools
3. CMSIS folder -> ../

* [bsp][lpc55s69]

 - add IAR support(IAR version: 9.30.1)

* [cpu][cm33] Support running in secure mode

* [bsp][lpc55sxx] Using the cortex cm33

* [console] 解决在没有定义RT_USING_DEVICE的情况下使用device报错的问题

* format codes

* [libc] 整理格式

* refresh projects

* [posix] POSIX standard implementation for PSE51

- add some posix's interfaces that we haven't before.
- these PR have passed the interface definition test across gcc platfrom;
- have tested base on qemu-a9 and stm32h750-art-pi.

* [newlib] only enable POSIX.1-1990

* update projects

* [kernel][mem] Multiple instances of small memory allocation algorithm

* [kernel][mem] Change small memory management algorithm memory header flag

* [kernel][mem] Fix assertion problem

* [kernel][slab] Multiple instances of slab memory management algorithm

* [kernel][memheap] Remove rt_malloc/rt_free/rt_realloc and other related memory interfaces

* [kernel][mem] Clean up memory space of small memory management objects

* [kernel][kservice] Add memory application interface and thread protection interface

* [kernel][kservice] Fix function return value problem

* [kernel][memheap] Optimize memheaptrace print

* [kernel][memheap] Support best mode

* [kernel][memory] Remove semaphore lock

* [kernel][memheap] Add locked flag

* [kernel][memory] Support malloc memory in interrupt

* [kernel][memheap] Add 'memheapcheck' cmd

* [kernel][mem] Fix failure to request full memory

* [kernel][memheap] Fix compilation warning

* [kernel][mem] Fix mem realloc ASSERT

* [examples][testcases] Add small mem testcase

* [examples][mem_tc] Modify test memory size

* [examples][testcases] Add slab memory management algorithm test case

* [examples][testcases] fix small memory management algorithm test case

* [kernel][memory] Adjusting memory allocation algorithm object definition and interface

* [kernel][memory] Fix compilation warning

* [examples][utest] Fix mem test case

* [examples][utest] fix slab test case

* [utest][testcases] Shorten test time

* [kernel][memory] Formatting code

* [examples][utest] Adjust test run time

* [examples][utest] Formatting code

* [bsp] update all rtconfig.h