Rust

Add Unit::new_with_abbreviations() to allow the user to use custom ab… #364

Job	Run time
build (ubuntu-latest, stable)	1m 11s
build (ubuntu-latest, beta)	1m 57s
build (ubuntu-latest, nightly)	1m 18s
build (ubuntu-latest, 1.65.0)	3m 59s
build (stable, macOS-latest)	2m 34s
Build fuzz targets	1m 54s
features	5m 39s
bench	2m 4s
coverage	1m 47s
msrv-read	2m 53s
cross (i686-unknown-linux-gnu)	1m 15s
cross (powerpc64-unknown-linux-gnu)	1m 18s
doc	39s
rustfmt	12s
Run `debug_abbrev` fuzz target	5m 12s
Run `debug_aranges` fuzz target	5m 6s
Run `debug_info` fuzz target	5m 10s
Run `debug_line` fuzz target	5m 9s
Run `eh_frame` fuzz target	5m 7s
Run `eh_frame_hdr` fuzz target	5m 12s
	59m 36s

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