Add Markdown Support and Default to Intelligent Paste

[patricknomad]

This PR contains two changes:

Markdown

Added the ability to paste markdown links when using the intelligent paste.

Personally this has been an issue when copying a list of links from Notion.

Example clipboard:

[https://github.com/vincepare/CopyAllUrl_Chrome/](https://github.com/vincepare/CopyAllUrl_Chrome/)
[Support](https://github.com/vincepare/CopyAllUrl_Chrome/issues)

converted to

https://github.com/vincepare/CopyAllUrl_Chrome/
https://github.com/vincepare/CopyAllUrl_Chrome/issues

Turn on Intelligent Paste by Default

Intelligent paste is probably more useful for most use cases. The odds that someone is pasting "file://" or "chrome://" links is quite low. For that special use case they could turn off Intelligent paste.