* refactor: use syntect for highlight, abandon mdcat
* split src/render.rs to sub modules. embed a default theme
* simulate typing effect.
* fix format
* feat: support highlight reply markdown
* migrate markdown highlighter from termimad to mdcat
* optimize render
No need to clear screen when there is no newline in reply token
* handle ctrl-c when rendering stream
* update readme
* fix ctrlc don't abort acquire_stream when establish connection
* ensure render_stream's dtect_ctrlc is exit before next readline
This will make reedline don't throw err 'The cursor position could not be read within a normal duration'