Add initial support for identity columns #445

Job	Run time
Formatting Check	54s
Cabal Check	52s
Build and Test (pg13, stack-lts-18.28-ghc-8.10.7.yaml)	2m 40s
Cabal Build	3m 39s
Build and Test (pg13, stack-lts-19.33-ghc-9.0.2.yaml)	2m 45s
Build and Test (pg13, stack-lts-20.26-ghc-9.2.8.yaml)	2m 39s
Build and Test (pg13, stack-lts-21.22-ghc-9.4.8.yaml)	2m 39s
Build and Test (pg13, stack-lts-22.28-ghc-9.6.6.yaml)	2m 38s
Build and Test (pg13, stack-nightly-2024-12-17-ghc-9.10.1.yaml)	2m 20s
Build and Test (pg13, stack.yaml)	2m 34s
Build and Test (pg17, stack-lts-18.28-ghc-8.10.7.yaml)	2m 46s
Build and Test (pg17, stack-lts-19.33-ghc-9.0.2.yaml)	2m 39s
Build and Test (pg17, stack-lts-20.26-ghc-9.2.8.yaml)	2m 45s
Build and Test (pg17, stack-lts-21.22-ghc-9.4.8.yaml)	2m 17s
Build and Test (pg17, stack-lts-22.28-ghc-9.6.6.yaml)	2m 33s
Build and Test (pg17, stack-nightly-2024-12-17-ghc-9.10.1.yaml)	2m 30s
Build and Test (pg17, stack.yaml)	2m 42s
Build and Test (pg14, stack.yaml)	2m 38s
Build and Test (pg15, stack.yaml)	2m 42s
Build and Test (pg16, stack.yaml)	2m 45s
	49m 57s

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