add pub date to chapter skeleton

[get] json format

Add arm64 build actions (#14)

Add arm64 build actions for darwin/macOS and linux.

add table of content to ebooks

add proxy feature, update readme

[list] add url, path and type in json output

[list] print absolute url in json output

json output for list command

accept several urls, fix tests, remove unused book struct

add html format, handle lazy loading images