1597 - Angular Demos: Add IdsModuleNav demos

[EdwardCoyle]

Explain the details for making this change. What existing problem does the pull request solve?
This PR adds demos of how to create Angular components utilizing the IdsModuleNav web component

Related github/jira issue(s) (required):
Related to infor-design/enterprise-wc#1597

Steps necessary to review your pull request (required):

• Pull/build. Ensure 1597 - IdsModuleNav: Improve Angular Support enterprise-wc#1606 has been merged or is npm link-ed to your local copy of the Angular component examples.
• Run and open http://localhost:4200/ids-module-nav/example.
• Try different combinations of resizing the browser viewport to different sizes while using the Hamburger button to control the menu state. All interactions should match the default WC behaviors (See the same WC demo for reference).
• Open http://localhost:4200/ids-module-nav/sandbox
• Ensure all "General Settings" are toggleable and work the same as its WC demo. Most controls are referencing an Angular property and are updated dynamically.
• Try different combinations of browser viewport size and clicking on/off the "responsive" setting.
• Try swapping the dataset using the radio group at the bottom. When the dataset changes, the Module Nav Items are populated with a template and object[]. Make sure all items are rendered properly (have expanders if they can, have icon alignment or not, etc).