Add JFR flags #38

Job	Run time
Select platforms	1s
linux-x86 / build (debug)	2m 2s
linux-x86 / build (release)	2m 16s
linux-x64-hs-nopch / build (debug)	1m 57s
linux-x64-hs-minimal / build (debug)	1m 35s
linux-x64 / build (debug)	1m 49s
linux-x64 / build (release)	1m 33s
linux-x64-hs-optimized / build (debug)	1m 45s
linux-x64-hs-zero / build (debug)	1m 50s
macos-aarch64 / build (debug)	2m 13s
macos-aarch64 / build (release)	1m 46s
macos-x64 / build (debug)	2m 19s
macos-x64 / build (release)	3m 4s
docs / build (debug)	1m 39s
windows-aarch64 / build (debug)	3m 23s
windows-aarch64 / build (release)	4m 1s
windows-x64 / build (debug)	3m 59s
windows-x64 / build (release)	3m 31s
linux-x64	0s
linux-cross-compile	0s
linux-x86	0s
macos-aarch64	0s
macos-x64	0s
windows-x64	0s
Remove bundle artifacts	6s
	40m 49s

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