restore dataform BUILD.bazel file lost in merge #887

Job	Run time
debug_job	2s
Save PR ref	3s
Windows-Bazel / bazel + msvc-2022 + opt + Core	21s
macOS-Bazel / bazel + macos-14 + Storage	21s
macOS-CMake / cmake + macos-14 + Core2	21s
Windows-CMake / cmake + msvc-2022 + x64 + Release + Core3	20s
Windows-CMake / cmake + msvc-2022 + x64 + Release + Core4	21s
Notify-Google-Chat	2s
	1m 51s

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