Add fast trace collection & use it for instrumenting guest memory operations #342

Job	Run time
spell check with typos	7s
docs-pr	5s
build-on-windows (windows-debug)	56s
build-on-linux (linux-kvm-debug)	53s
build-on-windows (windows-release)	1m 0s
build-on-linux (linux-kvm-release)	50s
build-on-linux (linux-hyperv-debug)	1m 20s
build-on-linux (linux-hyperv-release)	56s
fuzzing / fuzz	9m 15s
rust / build (hyperv, amd, debug)	16m 9s
rust / build (hyperv, amd, release)	21m 37s
rust / build (hyperv, intel, debug)	14m 46s
rust / build (hyperv, intel, release)	20m 4s
rust / build (mshv, amd, debug)	11m 12s
rust / build (mshv, amd, release)	13m 21s
rust / build (mshv, intel, debug)	9m 27s
rust / build (mshv, intel, release)	12m 45s
rust / build (kvm, amd, debug)	9m 42s
rust / build (kvm, amd, release)	13m 19s
rust / build (kvm, intel, debug)	9m 47s
rust / build (kvm, intel, release)	13m 0s
	3h 0m 31s

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