Added terminalio font support and scaling

[makermelissa]

Fixes #72.

[makermelissa]

The reason I added scaling into this PR (backported from MatrixPortal) is because the terminalio font at default size is very small.

[tannewt]

Could we share the graphics bits of the two portal libraries instead of backporting between the two?

[makermelissa]

Maybe, but the graphics are dealt with quite differently due to the different display sizes. For instance, I have a scrolling type for the Matrix that isn't needed with the PyPortal.

[FoamyGuy]

I tested these changes and I am getting and I'm getting an exception from this line:

Traceback (most recent call last):
  File "code.py", line 80, in <module>
  File "/lib/adafruit_pyportal.py", line 410, in __init__
TypeError: 'int' object is not subscriptable

I'm using the code from the quotes example here: https://learn.adafruit.com/adafruit-pyportal/parsing-json. I tried with the code as-is, and with the new text_scale parameter added, I'm getting same results both ways.

[FoamyGuy]

I was able to get past this error by adding a check for text_scale type inside the body of the if statement at line 368 of the modified code. Now mine looks like:

if isinstance(text_position[0], (list, tuple)):
    num = len(text_position)
    if not text_wrap:
        text_wrap = [0] * num
    if not text_maxlen:
        text_maxlen = [0] * num
    if not text_transform:
        text_transform = [None] * num
    if isinstance(text_scale, int):  # new check for text scale
        text_scale = [text_scale] * num

[tannewt]

Maybe, but the graphics are dealt with quite differently due to the different display sizes. For instance, I have a scrolling type for the Matrix that isn't needed with the PyPortal.

kk, maybe it's the network stuff we should be sharing. It makes sense the graphics would be different.

[makermelissa]

Thanks @FoamyGuy, I updated the code.

[FoamyGuy]

Tested with the newest commits and it's working well now.

Looks good to me. Thanks for this new feature @makermelissa