RNA: Object.select_set use boolean, only select

- Was setting active state, making it necessary to backup/restore
  active object in cases where this isn't needed.
  Existing scripts are explicitly setting the active object when needed.

- Use a boolean select arg (toggle selection wasn't used anywhere).

- Add an optional view layer argument since scripts should be able to
  operate outside the user context.

release/scripts/startup/bl_operators/clip.py

@@ -313,7 +313,7 @@ class CLIP_OT_bundles_to_mesh(Operator):
             ob = bpy.data.objects.new(name="Tracks", object_data=mesh)
             ob.matrix_world = matrix
             context.collection.objects.link(ob)
-            ob.select_set('SELECT')
+            ob.select_set(True)
             context.view_layer.objects.active = ob
         else:
             self.report({'WARNING'}, "No usable tracks selected")