Allow specifying request headers in `RasterOverlayOptions` #3282

Job	Run time
Documentation	43s
Linting	11m 30s
Quick Checks	11s
ubuntu-22.04 / gcc / Debug	5m 39s
ubuntu-22.04 / gcc / RelWithDebInfo	11m 28s
windows-2022 / Debug	7m 10s
ubuntu-20.04 / clang / Debug	5m 48s
windows-2022 / RelWithDebInfo	8m 16s
ubuntu-20.04 / clang / RelWithDebInfo	6m 24s
macos-13 / clang / Debug	12m 55s
macos-13 / clang / RelWithDebInfo	16m 23s
	1h 26m 27s

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