ENH: fuzzy skin handling

1 limit the range of setting
2 avoid too dense points when fuzzy skin enabled

Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: I6691fd03d2aa960b055b68100dfb338b640cb4af

src/libslic3r/PrintConfig.cpp

@@ -1443,6 +1443,7 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("The width within which to jitter. It's adversed to be below outer wall line width");
     def->sidetext = L("mm");
     def->min = 0;
+    def->max = 1;
     def->mode = comSimple;
     def->set_default_value(new ConfigOptionFloat(0.3));
 
@@ -1451,6 +1452,8 @@ void PrintConfigDef::init_fff_params()
     def->category = L("Others");
     def->tooltip = L("The average diatance between the random points introducded on each line segment");
     def->sidetext = L("mm");
+    def->min = 0;
+    def->max = 5;
     def->mode = comSimple;
     def->set_default_value(new ConfigOptionFloat(0.8));