Added a function to scale the font size according to preferences.

The scale will be calculated in relation to the system dpi and Blender's interface resolution scale.

src/bonsai/bonsai/tool/blender.py

@@ -1155,3 +1155,12 @@ class Blender(bonsai.core.tool.Blender):
                     pass
 
         return sun_position
+
+    @classmethod
+    def scale_font_size(cls, size):
+        default_dpi = 72
+        default_pixel_size = 1.0
+        default_scale = (default_dpi * default_pixel_size)
+        system = bpy.context.preferences.system
+        system_scale = (system.dpi * system.pixel_size)
+        return  (system_scale / default_scale) * size