Feature/json formatter

[emoralesb05]

Description

First iteration of the Json Formatter Module.

What's included?

TdJsonFormatterComponent

Added component that facilitates formatting and navigation of JavaScript objects. Mimicking chrome console. This iteration contains:

• Module docs and demo.
• Added package.json
• Added README.md
• Tooltip children preview. ( max elements to render: 5)
• Basic a11y (enter and tabbing).

Usage:

<td-json-formatter [data]="objData" [levelsOpen]="1"></td-json-formatter>

Properties:

Test Steps

• ng serve
• go to http://localhost:4200/#/components/json-formatter
• Use demo and see documentation.
• Try to use element following documentation anywhere in docs app.
• ✌️

Screenshots or link to CodePen/Plunker/JSfiddle

[richavyas]

@emoralesb05 - Is this how it is supposed to function?

[emoralesb05]

Removed expand/collapse from demo since it was just for show and in some cases they werent synced with the actual levels opened in json-formatter. (not really needed)

[kyleledbetter]

pushed a few cosmetic changes:

[richavyas]

scope of this method can be static