Add icon to push up station preset

[paulklie]

Description, Motivation & Context

Current icon:

Reused a bench icon to replace the generic "pitch" icon for push up stations:

And an example of what these look like :

Example: https://www.openstreetmap.org/node/12811848520#map=19/57.162144/14.050905

[github-actions]

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[tordans]

@paulklie thanks for looking into those icons. I let the preview action for all the PRs run. Could you share a link to one of those places using this preview and ideally a screenshot of what it looks now? That will save quite some time during review…

[matkoniecz]

iD adds it as

fitness_station=push-up
leisure=fitness_station
sport=fitness

https://overpass-turbo.eu/s/2bia finds partial matches

https://pr-1711--ideditor-presets-preview.netlify.app/id/dist/#locale=en&map=20.86/50.07269/19.99498&disable_features=boundaries&background=Geoportal2-PL-HighResolution-aerial_image_WMS gets us close to one of them