Dialog docs v1 (#287)
* creating dialog docs page and jsdocs to typescript interfaces
* fixing import to fix example
* copy improvements
* fixing package.json merge issue
* simplifying the dialog jsdocs and adding lints to future docs
* dialog jsdocs feedback updates
* Update index.d.ts
* update slots props desc
Co-authored-by: Danni <drobinson@livefyre.com>
