Revert "add parallel convert"

This reverts commit 6ee682ae1c41bfd64968d71334d72b52c8d29ca3.

add parallel convert

Add some comments

Add ScaleImage and Image2ASCII benchmark

rename hasky to husky

Add some convert to fixed the lint issue

fixed test

fixed the issue

add main test case

add convert test case

add scale image example

add scale image test cases

add convert package testdata

refactor the convert package

Fixed a slice allocate issue

Rewrite the go docs

fixed the comment

fixed the resize.go code style issue

add colored the asicc output

remove the useless code