[FanzyZones] Zone activation based on zone center (#11361)

* Started work on algorithm to select the zone with the center closest to the cursor.

* Fixed algorithm to compute center of rectangle

* Revert to taking the smallest area when the centers are too close (75 pixels).
Temporary turned off buffer of window selection to better see how the algorithm is working.

* Remove change to sensitivity radius.

* Changes in response to SeraphimaZ's comments.

* spelling fix

Co-authored-by: ulazy1 <ulazy198@gmail.com>

src/modules/fancyzones/lib/Settings.h

@@ -20,7 +20,8 @@ struct Settings
         Smallest = 0,
         Largest = 1,
         Positional = 2,
-        EnumElements = 3, // number of elements in the enum, not counting this
+        ClosestCenter = 3,
+        EnumElements = 4, // number of elements in the enum, not counting this
     };
 
     // The values specified here are the defaults.