add a __tostring method to every object (#1534)

* added a stupid __tostring to every object

* moved every __tostring to just after the :extend() call

---------

Co-authored-by: Adam <adamdharrison@gmail.com>
(cherry picked from commit 880e7f1fa1521cdf176f44627a27c901e187058e)

data/core/view.lua

@@ -48,6 +48,8 @@ local Scrollbar = require "core.scrollbar"
 ---@field current_scale number
 local View = Object:extend()
 
+function View:__tostring() return "View" end
+
 -- context can be "application" or "session". The instance of objects
 -- with context "session" will be closed when a project session is
 -- terminated. The context "application" is for functional UI elements.
@@ -307,5 +309,4 @@ end
 function View:draw()
 end
 
-
 return View