Add custom partials and templates

[dustinboss]

Just after I finished this, I noticed the next branch which totally refactors the templating process, so this solution won't work once you roll that out. However, here's a pull request to allow a user to easily customize partials and templates by providing their own files as options.

Example usage in typedoc.js

{
    customPartials: {
          'member.sources': '/path/to/my/custom/member.sources.hbs'
        },
        
        customTemplates: {
          'reflection: '/path/to/my/custom/reflection.hbs'
        }
}

[tgreyuk]

apologies been busy on other stuff. will try and have a proper look at this, however like you saying hoping to resolve this issue in the next major release.

[oleksiisurnin]

Great feature. Looking forward to implementing this!

[tgreyuk]

https://www.typedoc-plugin-markdown.org/docs/customizing-output