WiP: Convert camera tests to Hypothesis

[nbraud]

• test_camera_viewport
• test_camera_point_in_viewport_not_at_origin
• test_camera_translate_to_frame
• test_camera_translate_to_viewport
• test_sprite_in_viewport
• test_viewport_change_affects_frame_height

[nbraud]

I'm having some trouble converting test_camera_point_in_viewport_not_at_origin to an Hypothesis test.

Now I'm unsure I understand correctly what Camera.point_in_viewport is supposed to do (it's either that or there's a bug in it, given that I can't get Hypothesis not to explode on that test), and I can't find doc that clarifies it :(

[pathunstrom]

I think the correct answer to what it's supposed to do is "be overengineering made manifest"

It literally checks if a given vector exists in the viewport/window the camera is attached to. As far as I can tell, it's not been used and existed to handle the future case of multiple cameras.

[nbraud]

@pathunstrom OK; I still don't quite get what it's supposed to do (or in which coordinate system it operates, frame or viewport) so I will leave that test alone for now.

[pathunstrom]

Pretty sure it's pure viewport, not even a translation from one to the other. That's my bad.

[nbraud]

FWIW, CI is failing because I needed Vector.isclose, which isn't in a released version of ppb-vector yet.

[AstraLuma]

Seems good so far.

[AstraLuma]

Looking this over, I don't think #439 covers everything this does/aspires to be.

So I'm going to leave this open for now.