Initial commit. Added base of framework

README.md

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+# What is this
+A utility which can be used to create custom images for TRMNL devices via code
+
+# How to write new visual stuff
+1. Inherit from `Widget` and then do your magic inside your own class.
+2. Instantiate your widget in `main.cpp` and add it to the vector of widgets.
+3. ???
+4. Profit
+
+# ImageMagick commands
+### Convert image without dithering
+`magick input.png -monochrome -colors 2 -depth 1 -strip png:output.png`
+
+### Convert image with dithering
+`magick input.png -dither FloydSteinberg -remap pattern:gray50 -depth 1 -strip png:output.png`