docs(specs): add ACP v2 crate migration plan to 013-acp spec #8232

Job	Run time
Detect Changes	9s
CLA Check	7s
Build Tests (postgres archives)	-1s
Build (postgres)	-1s
MSRV check (1.97, ${{ matrix.label }})	-1s
Lint (shellcheck)	-1s
Bundle Check (${{ matrix.bundle }})	-1s
Build Tests	-1s
Lint (fmt)	-1s
Lint (clippy, ${{ matrix.label }})	-1s
Docker Build and Security Scan	0s
Validate Specs	-1s
CI Status	3s
Rustdoc	-1s
Release Build Check	0s
Coverage	0s
Integration Tests (${{ matrix.suite }})	0s
Test (shard ${{ matrix.partition }})	0s
Release Build Check (full)	0s
	9s

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