[make] Add rule to format .py files in the data generation folder #1978

Job	Run time
check-opcodes	3s
riscv-isa-sim	13s
check-control-registers	25s
tc-gcc	27s
tc-llvm	57s
verilator	8s
verilator-model (minpool)	6m 47s
verilator-model (mempool)	11m 46s
build-apps-gcc (minpool)	1m 32s
check-bootrom	10s
build-apps-gcc (mempool)	1m 25s
tc-halide	6s
build-apps-llvm (minpool)	1m 8s
build-apps-llvm (mempool)	1m 5s
build-apps-halide (minpool)	35s
build-apps-halide (mempool)	48s
unit-test	2m 10s
run-apps-halide (minpool)	36s
run-apps-halide (mempool)	2m 52s
run-apps-llvm (minpool)	32s
run-apps-gcc (minpool)	32s
run-apps-llvm (mempool)	2m 23s
run-apps-gcc (mempool)	2m 19s
clean-up-compile-runs (minpool)	2s
clean-up	2s
clean-up-compile-runs (mempool)	3s
	39m 6s

Provide feedback