GEAR sink : final chunk from the big MR

This MR splits !1943 (merged) into its last chunk. Here are the changes:

• We discovered a "bug" when we ran with --enable-debugging-checks with the POP III stars table. The SNIa progenitor mass can be smaller than the IMF mass, and the code crashes. I commented this part while thinking for a better check.
• I added a star_formation_setters.h file in the GEAR module. I don't want sink particles to modify SF data structures from within the sink module. I prefer to call setters functions.
• I added an error message when we try to run the code with --sink but without --feedback. If we do the latter, the code crashes because of memory error (feedback data are not initialised). An error is clearer for the users.

added GEAR sink labels

assigned to @matthieu

Can you run the formatting script?

added 1 commit

• 132983a5 - Run format.sh

Compare with previous version

Oh yes, I forgot it.

Done. It also changed src/fvpm_geometry/Gizmo/fvpm_geometry.h header order. Don't know if it was important

Yes, that was a mistake I just fixed in master too.

Can I ask why the sink scheme needs feedback?

resolved all threads

approved this merge request

All is good for me. Thanks for the small easy chunks.

Many thanks for your patience and reviews!

mentioned in commit 9c313726

merged