Added genaration script, pre-commit and git-lfs

.gitattributes

@@ -0,0 +1 @@
+*.png filter=lfs diff=lfs merge=lfs -text

generate.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p imagemagick
+
+DIR=$(dirname -- "$(readlink -f -- "$0")")
+
+magick "$DIR/source.svg" "$DIR/export.png"

pre-commit

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+./generate.sh
+
+if [ $? -ne 0 ]; then
+  echo "generate.sh failed. Commit aborted."
+  exit 1
+fi