SPI-2295: Add pre_commit, black (!1695) · Merge requests · sft / lcgcmake

Add pre_commit and black

Reopened because previous MR got a bit spammed down (old: !1690 (closed))

To run the testing, add a comment with:

Bot test PACKAGE[ PACKAGE2 ...]|all in TOOLCHAIN|all [(only|also) for LABEL-COMPILER-BUILDTYPE] please!

To ensure patches required for existing LCG branches are not lost, please add the respective labels: alsoTargeting:LCG_102-patches, alsoTargeting:master, etc.

SPI-2295: Add pre_commit, black