Local adjustments - Added Guidedfilter to avoid color shift (#6149)

* Added Guidedfilter to avoid color shift

* Various improvment to avoid color shift

* Small change to mint maxt

* local adjustments avoid color shift: reduce memory usage by width * height * 8 byte if Soft Radius > 0

* Remove StopWatch

* local adjustments avoid color shift: speedup for last loop

* cleanups

* one more cleanup

* Added checkbox Munsell correction only - uniform perceptual lab

* Refine some settings

* Clean-up - other small refinement

Co-authored-by: Ingo Weyrich <heckflosse67@gmx.de>

rtengine/procevents.h

@@ -1062,6 +1062,8 @@ enum ProcEventCode {
     Evlocallabnlrad = 1036,
     Evlocallabnlgam = 1037,
     Evlocallabdivgr = 1038,
+    EvLocallabSpotavoidrad = 1039,
+    EvLocallabSpotavoidmun = 1040,
     NUMOFEVENTS
 };