Add preset for climbing=crag point and relation

[harahu]

Description, Motivation & Context

This PR is part of a larger effort to add support for rock climbing related features to iD. In this PR we add a preset for a climbing "crag", which is understood to be a grouping of distinct climbing routes that are located at most a few minutes walk from each other, usually on the same cliff face. Climbing crags are currently in active use by data consumers, e.g. openclimbing.org.

Climbing crags can be equipped with additional fields, in addition to a name. Usually this would be tags representing summary statistics for the routes contained within the crag. I've consciously decided to leave such fields out of this PR, since in practice all this information can be computed from the member objects, if the crag is represented as a relation. If the crag is rather represented as a point or a cliff line, such additional tagging could be helpful, but I'd rather encourage mapping crags as relations of routes, since this increases the value of the data available in OSM.

I've set up a Wikibase entry and a corresponding article for climbing areas, which can be found here:
https://wiki.openstreetmap.org/wiki/Item:Q23047
https://wiki.openstreetmap.org/wiki/Tag:climbing%3Dcrag

Related issues

• Presets for climbing features #31

Links and data

Relevant OSM Wiki links:

• Climbing crags

Relevant tag usage stats:
https://taginfo.openstreetmap.org/tags/climbing=crag
https://taghistory.raifer.tech/#***/climbing/crag

5868 current uses

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## Test-Documentation

### Preview links & Sidebar Screenshots

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<!-- FYI: What we will check:
     - Is the [icon](https://github.com/ideditor/schema-builder/blob/main/ICONS.md) well chosen.
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     - Test the preset name as search terms.
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### Wording

- [ ] American English
- [ ] `name`, `aliases` (if present) use Title Case
- [ ] `terms` (if present) use lower case, sorted A-Z
<!-- Learn more in https://github.com/openstreetmap/id-tagging-schema/blob/main/GUIDELINES.md#2-design-the-preset -->

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[harahu]

Test-Documentation

Preview links & Sidebar Screenshots

https://pr-1597--ideditor-presets-preview.netlify.app/id/dist/#locale=en&map=17.24/59.86893/5.95401&disable_features=boundaries&background=geovekst-nib&id=r19141778

https://pr-1597--ideditor-presets-preview.netlify.app/id/dist/#locale=en&map=18.81/59.86978/5.99424&disable_features=boundaries&background=geovekst-nib&id=n12848932790

Search

Info-i

Wording

• American English
• name, aliases (if present) use Title Case
• terms (if present) use lower case, sorted A-Z

[tordans]

This looks good. One thing about lines/areas that we should think about.

As with #1598 I hope for input from others about the relation part of this PR.