Add `ReadOnlySpan<T>` / `ReadOnlyMemory<T>` overloads #297

Job	Run time
CI (ubuntu-22.04, mcr.microsoft.com/dotnet/sdk:8.0-bookworm-slim, ./build.sh)	59s
CI (ubuntu-22.04, rockylinux:8, ./build.sh)	3m 9s
CI (ubuntu-22.04, mcr.microsoft.com/dotnet/sdk:8.0-alpine3.18, ./build.sh)	1m 5s
CI (macos-12, ./build.sh)	1m 26s
CI (windows-2022, .\build.ps1)	3m 24s
	10m 3s

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