feat(bigtable): implement execute query in data connection impl #8579

Job	Run time
debug_job	3s
Save PR ref	4s
Windows-Bazel	0s
Windows-CMake / cmake + msvc-2022 + x64 + Release + Core3	2m 39s
macOS-Bazel	-1s
Windows-CMake / cmake + msvc-2022 + x64 + Release + Core4	2m 39s
macOS-CMake	-1s
Notify-Google-Chat	2s
	5m 25s

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