* Create system application repository

* add powermgr repo and dev-board meetingnotes

* add sig graphisandmedia basic info

* Modified meeting and contact info.

* changed leader of sig-softbus. from li-jet to maerlii.

* update sig/sig-softbus/sig_softbus.md.

* Description:[fix] format file type from dos2unix
* Description:[fix] fixed SIG information and format

Signed-off-by: NRobert <roberthuang1010@163.com>

Signed-off-by: Nkeven <likai20@iscas.ac.cn>

Signed-off-by: NKelei Liang <kelei@iscas.ac.cn>

* Create Basic Software Services SIG.

* Description:[fix] update sig release information for version release

* Description:[fix] delete L1S maps for SIG API group

* Description:[fix] fixed typo and delete redundant description

* Description:[fix]/ update SIG responsibilities and operation procedure

* Description:[fix]/fixed typo for sig's level1 subsystem description

* Description:[fix] update sig template and deleted redundant

* Description:[fix] update sig template

* create sig-distributedhardwaremgr and add committee

* Description:[feature] update maps of sigs name and subsystem

* Description:[fix] update sig-fs to sig-kernel

* update sig/sigs.json.

* add sig-softbus

* Create sig project for system applications sig.

* Description:[feature] Create API SIG for API governance

* 维护sig信息

* Remove uncreated project and update commiter profile link.

* Description:[fix] Complete the dllite-micro sig information

* add third party boards

* Added sig about oh-board-website

* Description:[fix] update contribute license from CLA to DCO

* Add application sig

* Description:[fix] Create SIGs list

* Add sig RISC-V

* add dllite micro sig

* OpenBlock SIG create

* Description:[fix] optimize SIG proposal and creation process description

* add sig/sig-distributeddatamgr/meeting_records.md.

* Description:[fix] Update SIG proposal apply process

Bug: I3RB4W
Test: NA