feat(sdk): client.get_many — batched multi-kind node fetch #2813

Job	Run time
Detect which file has changed	3s
prepare-environment / prepare	2s
markdown-lint	5s
python-lint	13s
uv-lock-check	0s
action-lint	0s
yaml-lint	0s
documentation	1m 14s
validate-documentation-style	7s
validate-generated-documentation	1m 12s
integration-tests-latest-infrahub	4m 19s
unit-tests (3.11)	1m 58s
unit-tests (3.10)	1m 59s
unit-tests (3.14)	2m 28s
unit-tests (3.13)	2m 41s
unit-tests (3.12)	2m 15s
	18m 36s

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