New Custom Map UI - GeoName Search (#66)

* GeoName Search Custom Map Application

Added a new Custom map Application (GeoName Search) Which uses the GeoName API to search for Canadian Locations to map.

* * Made code a bit more consistent (still working on it)
* Accessibility added to application (screen-reader accessible)
* Fixed UI (works on all computer screen size)
* Added support for Geometry Collections
* Polygon Holes are now shown
* Layer Properties now viewable
* + Many more minor updates

TODO - make code more standard (ex. Standardizing geoJson2MapML function for broader use)

* Update api/custom-map-ui/geoname-search-ui.html

Update overflow settings for results container

Co-authored-by: Robert Linder <[email protected]>

* standardized code

*updated == to ===
*updated variable declaration to use 'let' to be consistent

* Focus Map when layer added

map is focused when a new layer is added

* Implemented a geojson to mapml function

*updated the geoJson2MapMl function to now return a complete mapml layer by providing a geojson, works independently.

* Application does not use templates anymore to make the geoJson2MapMl more independent

* Minor code fixes

* updated naming convention
* removed repetitive code
* added more comments

* Updated HTML Parser Usage

use once instance of html parser

Co-authored-by: Aliyan Haq <[email protected]>
Co-authored-by: Robert Linder <[email protected]>

Author: 3 people