Add clearer 2D point validation for 2D drawing functions

[pushfoo]

Enhancement request:

TL;DR: Add clearer exceptions on malformed visually Point2List cases like [(1,), (2, 2), (1,)]

What should be added/changed?

As of #2213, we annotate 2D line drawing functions with Point2List.

We should the following:

1. A try / catch block or other validation to help detect bad data and report it nicely
2. Tests if we return a ValueError since the current behavior returns a TypeError

What would it help with?

It would make the traceback clearer when malformed data is passed.

The traceback below is produced by this (example code):

Traceback (most recent call last):
 File "/home/user/src/arcade/.scratch/line_validation_reason.py", line 24, in <module>
 arcade.run()
 File "/home/user/src/arcade/arcade/window_commands.py", line 139, in run
 pyglet.app.run(window._draw_rate)
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/app/__init__.py", line 80, in run
 event_loop.run(interval)
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/app/base.py", line 165, in run
 timeout = self.idle()
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/app/base.py", line 226, in idle
 self.clock.call_scheduled_functions(dt)
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/clock.py", line 217, in call_scheduled_functions
 item.func(now - item.last_ts, *item.args, **item.kwargs)
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/app/base.py", line 120, in _redraw_windows
 window.dispatch_event('on_draw')
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/window/__init__.py", line 676, in dispatch_event
 super().dispatch_event(*args)
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/event.py", line 394, in dispatch_event
 self._raise_dispatch_exception(event_type, args, getattr(self, event_type), exception)
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/event.py", line 446, in _raise_dispatch_exception
 raise exception
 File "/home/user/src/arcade/.venv/lib/python3.9/site-packages/pyglet/event.py", line 387, in dispatch_event
 if getattr(self, event_type)(*args):
 File "/home/user/src/arcade/.scratch/line_validation_reason.py", line 19, in on_draw
 arcade.draw_lines(self.malformed, arcade.color.RED, line_width=10)
 File "/home/user/src/arcade/arcade/draw/line.py", line 98, in draw_lines
 line_pos_array = array.array("f", (v for point in point_list for v in point))
 File "/home/user/src/arcade/arcade/draw/line.py", line 98, in <genexpr>
 line_pos_array = array.array("f", (v for point in point_list for v in point))
TypeError: 'int' object is not iterable