WildCat/Induced: add and use intros_of_type tactic #1816

Job	Run time
quick-build (supported, ubuntu-latest)	2m 28s
build (supported)	3m 11s
nix	2m 7s
build (latest)	3m 12s
opam-build (supported, ubuntu-latest)	5m 31s
quick-build (latest, ubuntu-latest)	2m 44s
opam-build (8.17, ubuntu-latest)	5m 28s
quick-build (dev, ubuntu-latest)	2m 37s
build (dev, --warnings)	3m 43s
opam-build (latest, ubuntu-latest)	4m 8s
opam-build (dev, ubuntu-latest)	4m 21s
coqchk (supported)	1m 44s
doc-dep-graphs	7m 15s
doc-alectryon	12m 50s
coqchk (latest)	1m 24s
doc-coqdoc	1m 6s
coqchk (dev)	2m 4s
doc-timing	1m 11s
install (supported)	1m 3s
install (latest)	1m 1s
install (dev)	1m 2s
deploy-doc	0s
delete-artifacts	8s
	1h 10m 18s

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