Improved compile speed by running multi-threaded library discovery. (… #5722

Job	Run time
run-determination	4s
package-name-prefix	2s
Create artifact Windows_X86-32	47s
Create artifact Linux_X86-32	56s
Create artifact Windows_X86-64	45s
Create artifact Linux_ARMv6	1m 4s
Create artifact Linux_X86-64	1m 7s
Create artifact Linux_ARMv7	1m 2s
Create artifact macOS_ARM64	2m 17s
Create artifact rpc-protocol-files	18s
Create artifact configuration-schema	17s
Create artifact macOS_64	1m 41s
Create artifact Linux_ARM64	1m 2s
checksums	6s
	11m 28s

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