Rework @turf/dissolve & new modules proposal

[DenisCarriere]

Rework module @turf/dissolve

New module proposal @turf/line-dissolve

New module proposal @turf/polygon-dissolve

New module proposal @turf/homogenous

This proposal is be aimed for post v5.0 release.

Been looking at converting geojson-dissolve to ES modules and diving into the source code and many things could be dropped for performance and geojson-linestring-dissolve can be converted to an internal TurfJS module.

Dependencies

• topojson-server (ES module compatible)
• topojson-client (ES module compatible)
• geojson-linestring-dissolve (should be internalized to TurfJS => zero external dependencies required)
• geojson-flatten (changed to @turf/meta flattenEach() which will boost performance on large dataset).

@turf/homogenous

Or could be built-in to @turf/invariant or @turf/helpers as homogenous()

Returns a string Geometry type, if multiple or no geometry types are found then it will return null.