[FEATURE] Include POIs into generated maps and diplay them with VTM rendering

[treee111]

This PR…

• introduces POIs into the generated files and display them as symbol on your wahoo device!
  • bakery
  • drinking water
  • fuel station
  • cafe

Considerations and implementations

• launch config for POIs
• adjustments to enable POIs
  • constants update to NOT-filter out POIs
  • tag-wahoo file update to include POIs into generated file
  • VTM device theme for POIs incl. symbols
• documentation adjustments

How to test

1. create maps and act like written in the documentation

Pull Request Checklist

• Reviewed the Contributing Guidelines
  • Especially the Pull-Requests section
• Commits (and commit-messages) are understandable
• Tested with macOS / Linux
• Tested with Windows

[mweirauch]

I think you don't need any custom symbols in the project. They are part of the vtm library (to my understanding).

https://github.com/mapsforge/vtm/tree/master/vtm-themes/resources/assets

Using a @Intyre inspired snippet in my custom vtm-elemnt.xml shows up POI icons just fine in Cruiser and on the Bolt2:
(of course with a modified tag-mapping to include these tags and custom keep-tag-constants, but the latter was merged ...)

	<m k="amenity" zoom-min="15">
		<m v="cafe">
			<symbol src="assets:symbols/food/cafe.svg" symbol-percent="100" />
		</m>
		<m v="drinking_water">
			<symbol src="assets:symbols/food/drinkingtap.svg" symbol-percent="100" />
		</m>
		<m v="fuel">
			<symbol src="assets:symbols/transport/fuel.svg" symbol-percent="100" />
		</m>
	</m>

	<m k="shop" zoom-min="15">
		<m v="bakery">
			<symbol src="assets:symbols/shopping/bakery.svg" />
		</m>
		<m v="bicycle">
			<symbol src="assets:symbols/shopping/bicycle.svg" />
		</m>
		<m v="supermarket">
			<symbol src="assets:symbols/shopping/supermarket.svg" />
		</m>
	</m>

[treee111]

I think you don't need any custom symbols in the project. They are part of the vtm library (to my understanding).

https://github.com/mapsforge/vtm/tree/master/vtm-themes/resources/assets

Using a @Intyre inspired snippet in my custom vtm-elemnt.xml shows up POI icons just fine in Cruiser and on the Bolt2: (of course with a modified tag-mapping to include these tags and custom keep-tag-constants, but the latter was merged ...)

	<m k="amenity" zoom-min="15">
		<m v="cafe">
			<symbol src="assets:symbols/food/cafe.svg" symbol-percent="100" />
		</m>
		<m v="drinking_water">
			<symbol src="assets:symbols/food/drinkingtap.svg" symbol-percent="100" />
		</m>
		<m v="fuel">
			<symbol src="assets:symbols/transport/fuel.svg" symbol-percent="100" />
		</m>
	</m>

	<m k="shop" zoom-min="15">
		<m v="bakery">
			<symbol src="assets:symbols/shopping/bakery.svg" />
		</m>
		<m v="bicycle">
			<symbol src="assets:symbols/shopping/bicycle.svg" />
		</m>
		<m v="supermarket">
			<symbol src="assets:symbols/shopping/supermarket.svg" />
		</m>
	</m>

Good point! I checked that on my BOLTv1. That did not work. In cruiser it also worked without having the symbols.
I think this is because only the BOLTv2 has VTM rendering per default and the VTM library on the device while the others don't (or have a version without some symbols etc.)