Add `ExpandDerive` handler #7399

Job	Run time
build test linux x86-64	3m 51s
build test windows x86-64	13m 8s
check-rust	1m 50s
check-website	11s
scarb-metadata compatibility check	48s
doc tests	3m 20s
test linux x86-64 1/8	15m 44s
test linux x86-64 2/8	16m 57s
test linux x86-64 3/8	15m 32s
test linux x86-64 4/8	12m 49s
test linux x86-64 5/8	12m 28s
test linux x86-64 6/8	9m 12s
test linux x86-64 7/8	9m 22s
test linux x86-64 8/8	10m 43s
test windows x86-64 1/8	13m 39s
test windows x86-64 2/8	17m 3s
test windows x86-64 3/8	13m 28s
test windows x86-64 4/8	13m 11s
test windows x86-64 5/8	11m 27s
test windows x86-64 6/8	9m 8s
test windows x86-64 7/8	8m 48s
test windows x86-64 8/8	10m 12s
	3h 42m 51s

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