change google font to local

Signed-off-by: 顾翔 <c0710204@gmail.com>
edit readme
Signed-off-by: 顾翔 <c0710204@gmail.com>
add cmd for streamer

Signed-off-by: 顾翔 <c0710204@gmail.com>
add cmd for core

Signed-off-by: 顾翔 <c0710204@gmail.com>