Add filter startpoint option (height only) #519

Job	Run time
bitcoind	2m 26s
signet	1m 8s
build (ubuntu-latest, 1.63.0)	1m 59s
build (ubuntu-latest, stable)	2m 42s
build (ubuntu-latest, beta)	4m 30s
build (ubuntu-latest, nightly)	2m 52s
build (macos-latest, 1.63.0)	1m 50s
build (macos-latest, stable)	2m 31s
build (macos-latest, beta)	1m 59s
build (macos-latest, nightly)	2m 17s
build (windows-latest, 1.63.0)	2m 51s
build (windows-latest, stable)	4m 43s
build (windows-latest, beta)	3m 43s
build (windows-latest, nightly)	3m 25s
	38m 56s

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