Add Light Rail Station into PlaceType

[eliskapulcova]

I found out that light_rail_station is supported as PlaceType. However, it's not documented, so I'm not sure about this, WDYT?

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[eliskapulcova]

I signed it!

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[domesticmouse]

Thanks for the PR!

[julamb]

Hi! Thanks for the fix, I've been looking for this too. Any info on the next release date?