Ability to customize styles without creating a new theme

[tusharmath]

Problem

As a user of this library I would like to customize the styles using some external CSS.

Suggested Solution

Inside typedoc.json add a property — customCSS where any file path for CSS can be added.

{
  "customCSS": "../theme/style.css"
}

[ical10]

I was trying to move the menu bar from right to left, and this works. Just need to create style.css and define the css rules inside the class that we want to modify.