read: add Evaluation::value_result #381

Job	Run time
coverage	1m 10s
Build fuzz targets	58s
bench	1m 34s
build (ubuntu-latest, stable)	53s
cross (i686-unknown-linux-gnu)	54s
doc	29s
build (ubuntu-latest, beta)	51s
features	3m 18s
cross (powerpc64-unknown-linux-gnu)	1m 0s
build (ubuntu-latest, nightly)	50s
build (ubuntu-latest, 1.65.0)	4m 42s
msrv-read	3m 59s
rustfmt	11s
build (stable, macOS-latest)	2m 9s
Run `debug_abbrev` fuzz target	5m 8s
Run `debug_aranges` fuzz target	5m 6s
Run `debug_info` fuzz target	5m 7s
Run `debug_line` fuzz target	5m 5s
Run `eh_frame` fuzz target	5m 6s
Run `eh_frame_hdr` fuzz target	5m 9s
	53m 39s

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