Maintainers for each submodules

TODO

maintainer	system	sub-system	2nd sub-system
bernard, jesven	kernel
	bsp
sheltonyu		at32
wangyongquan		essemi
whj4674672, KyleChenjh		stm32
刘恒			stm32f072-st-nucleo stm32f103-gizwits-gokitv21 stm32f103-yf-ufun stm32l452-st-nucleo
zylx			stm32f091-st-nucleo stm32f429-armfly-v6 stm32h750-armfly-h7-tool
Guozhanxin			stm32f103-atk-nano stm32f103-fire-arbitrary stm32f407-atk-explorer stm32l496-ali-developer
obito0			stm32f103-atk-warshipv3 stm32f103-mini-system
Meco Man			stm32f103-blue-pill
WillianChan			stm32f103-dofly-M3S stm32f469-st-disco
FindYGL			stm32f103-dofly-lyc8
XiaojieFan			stm32f103-hw100k-ibox
DriftSnail			stm32f103-onenet-nbiot
whj			stm32f107-uc-eval
sunlichao			stm32f405-smdz-breadfruit
misonyo			stm32f407-st-discovery
tanglj86			stm32f410-st-nucleo
bigaij			stm32f411-atk-nano
misonyo			stm32f411-st-nucleo
greedyhao			stm32f411-weact-MiniF4 stm32f767-fire-challenger
flybreak			stm32f412-st-nucleo stm32f413-st-nucleo
a1012112796			stm32f427-robomaster-a
SummerGift			stm32f429-atk-apollo stm32f429-fire-challenger stm32l475-atk-pandora
xuzhuoyi			stm32f429-st-disco stm32g431-st-nucleo
jinsheng			stm32f746-st-disco
BalanceTWK			stm32f767-atk-apollo
e31207077			stm32f767-st-nucleo
WillianChan			stm32f769-st-disco
NU-LL			stm32g070-st-nucleo
gztss			stm32g071-st-nucleo
whj4674672			stm32h743-atk-apollo
tyustli			stm32h743-st-nucleo stm32l475-st-discovery
xph			stm32l010-st-nucleo
sun_shine			stm32l053-st-nucleo
luhuadong			stm32l412-st-nucleo
sun_shine			stm32l432-st-nucleo
Sunwancn			stm32l433-st-nucleo
supperthomas			stm32l496-st-nucleo
liukang			stm32mp157a-st-discovery stm32mp157a-st-ev1
Dozingfiretruck			stm32wb55-st-nucleo
woody		swm320
Thomas		nrf5x
wosayttn		nuvoton
wormsX		thead-smart
	components
		cplusplus
bernard		finsh/msh
		lwIP
Lawlieta		SAL
		DFS
bernard		libc
GuoZhanxin, armink		drivers
		utilities
			ulog
			utest
			ymodem