Add vectorio support

[makermelissa]

Fixes #117.

[FoamyGuy]

Do we need to add vectorio here in pyproject.toml?

Adafruit_Blinka_Displayio/pyproject.toml

Line 45 in 0c50ba2

packages = ["displayio"]

The first time I tried testing this I got an error on the vectorio import internally in Blinka_DisplayIO. I added this and it seemed to resolve it. But then I tried to go back with it the original way to recreate the exact stacktrace and now I'm not having the same outcome any more. Perhaps I did something wrong when I installed it initially.

It might be good to keep pyprojet.toml and setup.py in sync even if it isn't required for all contexts as well though.

[FoamyGuy]

The functionality and code look good to me. I tested it successfully with vectorio example code from the docs and PyGameDisplay library.

[makermelissa]

Do we need to add vectorio here in pyproject.toml?

Yes, I believe so.

[FoamyGuy]

Looks good to me. Thanks for the addition!