Add include field to the manifest #8181

Job	Run time
build test linux x86-64	3m 55s
build test windows x86-64	9m 23s
check-rust	4m 0s
check-website	9s
scarb-metadata compatibility check	46s
doc tests	3m 9s
test linux x86-64 1/8	20m 1s
test linux x86-64 2/8	26m 32s
test linux x86-64 3/8	20m 2s
test linux x86-64 4/8	18m 51s
test linux x86-64 5/8	16m 52s
test linux x86-64 6/8	13m 31s
test linux x86-64 7/8	12m 57s
test linux x86-64 8/8	14m 39s
test windows x86-64 1/8	18m 45s
test windows x86-64 2/8	23m 15s
test windows x86-64 3/8	20m 49s
test windows x86-64 4/8	15m 59s
test windows x86-64 5/8	13m 13s
test windows x86-64 6/8	12m 15s
test windows x86-64 7/8	12m 14s
test windows x86-64 8/8	13m 40s
	4h 54m 57s

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