View command, for images, should support zooming in/out with +/~ about minimicro-sysdisk HOT 2 OPEN

This code is in startup.ms. Your workflow will look like this:

1. Clone this repo
2. In Mini Micro, mount the sys folder in slot 1
3. edit "startup" (or use an external editor)
4. run it (from the editor, or the run "startup" command)
5. Test the view command
6. Goto 3 until done

from minimicro-sysdisk.

For a recent example of why this would be useful, see this blog post. It uses this tile set image:

But because the tiles are only 8x8 pixels, I couldn't use the view command to usefully display the tile indexes. I had to use a drawing program and manually label all 88 tiles! It was a pain.

With this new feature, we'll be able to view those indexes right within Mini Micro by doing this:

display(5).mode = displayMode.tile
td = display(5)
td.tileSet = file.loadImage("dk_tiles.png")  // or whatever we called the above image
td.tileSetTileSize = 8
view td.tileSet

...and then zooming in until it's legible.

from minimicro-sysdisk.