Support more ModuleItems in proc macro attribute expansion #6939

Job	Run time
check-rust	3m 49s
scarb-metadata compatibility check	53s
build test linux x86-64	3m 44s
check-website	8s
build test windows x86-64	10m 45s
doc tests	3m 6s
test linux x86-64 1/8	14m 2s
test linux x86-64 2/8	17m 46s
test linux x86-64 3/8	15m 43s
test linux x86-64 4/8	12m 33s
test linux x86-64 5/8	11m 16s
test linux x86-64 6/8	9m 51s
test linux x86-64 7/8	7m 49s
test linux x86-64 8/8	8m 9s
test windows x86-64 1/8	13m 13s
test windows x86-64 2/8	15m 19s
test windows x86-64 3/8	14m 43s
test windows x86-64 4/8	11m 32s
test windows x86-64 5/8	10m 15s
test windows x86-64 6/8	9m 0s
test windows x86-64 7/8	8m 12s
test windows x86-64 8/8	7m 45s
	3h 29m 33s

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