feat: add mono-styled anronicons

The color shading works fine with our system AppIcon as shown in the
gallery.

This premium (paid) icon-set will add more quality to our designsystem.

anronicons/duocolor/basic/inbox.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path opacity="0.4" d="M2.5 14H5.28726C5.9134 14 6.22647 14 6.51065 14.0863C6.76223 14.1627 6.99628 14.288 7.1994 14.4549C7.42884 14.6435 7.6025 14.904 7.94982 15.425L8.04987 15.575C8.3972 16.096 8.57086 16.3565 8.8003 16.5451C9.00342 16.712 9.23747 16.8373 9.48904 16.9137C9.77322 17 10.0863 17 10.7124 17H13.2873C13.9134 17 14.2265 17 14.5106 16.9137C14.7622 16.8373 14.9963 16.712 15.1994 16.5451C15.4288 16.3565 15.6025 16.096 15.9498 15.575L16.0499 15.425C16.3972 14.904 16.5709 14.6435 16.8003 14.4549C17.0034 14.288 17.2375 14.1627 17.489 14.0863C17.7732 14 18.0863 14 18.7124 14H21.5" stroke="#2F384C" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M2.86897 17.4764C2.72844 16.9143 2.65818 16.6332 2.60214 16.3529C2.29156 14.7997 2.29157 13.2003 2.60216 11.6471C2.65821 11.3668 2.72848 11.0858 2.86901 10.5237L3.48505 8.05962C4.02673 5.89299 4.29757 4.80968 4.90156 4.00308C5.43446 3.2914 6.1475 2.73469 6.96718 2.39031C7.89619 2 9.01285 2 11.2462 2H12.7537C14.9871 2 16.1038 2 17.0328 2.39032C17.8525 2.73471 18.5656 3.29144 19.0985 4.00314C19.7024 4.80977 19.9733 5.89312 20.5149 8.05981L21.1309 10.5237C21.2714 11.0859 21.3417 11.367 21.3977 11.6473C21.7082 13.2004 21.7082 14.7996 21.3977 16.3527C21.3416 16.633 21.2714 16.9141 21.1308 17.4763V17.4763C20.9559 18.1759 20.8684 18.5257 20.7506 18.8261C20.0846 20.5237 18.5472 21.7241 16.7387 21.9585C16.4187 22 16.0581 22 15.3369 22H8.66275C7.94165 22 7.58111 22 7.26113 21.9585C5.45262 21.7241 3.91515 20.5237 3.24914 18.8261C3.1313 18.5257 3.04386 18.1759 2.86897 17.4764V17.4764Z" stroke="#2F384C" stroke-width="1.5" stroke-linecap="round"/>
+</svg>