feat: support custom colors 🎉 (#4843)

* feat: support custom colors 🎉

* remove canvasBackground

* fix tests

* Remove custom color when elements deleted

* persist custom color across sessions

* Choose 5 latest custom colors when populating from elements

* fix tests

* styling

* don't use up/down arrow for custom colors

* Always push latest color to the begining

* don't check if valid in custom color

* calculate custom colors on color picker open

* revert unnecessary changes

* remove newlines

* simplify state

* tweak label

* fix custom color shortcuts throwing if color not exists

* fix

* early return

Co-authored-by: dwelle <luzar.david@gmail.com>

src/locales/en.json

@@ -64,6 +64,7 @@
     "cartoonist": "Cartoonist",
     "fileTitle": "File name",
     "colorPicker": "Color picker",
+    "canvasColors": "Used on canvas",
     "canvasBackground": "Canvas background",
     "drawingCanvas": "Drawing canvas",
     "layers": "Layers",