Add height-query function to Tileset #2115

Job	Run time
Documentation	12m 34s
Quick Checks	12s
windows-2019 / Debug	4m 43s
ubuntu-latest / gcc / Debug	3m 29s
windows-2019 / RelWithDebInfo	5m 9s
ubuntu-latest / gcc / RelWithDebInfo	8m 14s
windows-2022 / Debug	5m 7s
ubuntu-20.04 / clang / Debug	3m 38s
windows-2022 / RelWithDebInfo	4m 26s
ubuntu-20.04 / clang / RelWithDebInfo	3m 39s
macos-12 / clang / Debug	5m 40s
macos-12 / clang / RelWithDebInfo	4m 11s
	1h 1m 2s

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