Better types

[Kikobeats]

There are some TODO's to improve types detection based on the context environment

• https://github.com/microlinkhq/mql/blob/master/index.d.ts#L144
• https://github.com/microlinkhq/mql/blob/master/index.d.ts#L156

[goleary]

additionally, the function prop is missing from the opts type.

[goleary]

The types that were added actually broke our environment due to how we use mql (which was typeless before)

[goleary]

The media return types are also incorrect

Just realized that I have types I've been using internally that probably should've been contributed back to this project

https://gist.github.com/goleary/d2a99c345695db21d9f1f27524f47c40

[goleary]

went ahead and created #81 by combining what's here with the types I've been maintaining on my end.