Add infill icons

resources/icons/param_concentric.svg

@@ -0,0 +1,20 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
+ "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="300.000000pt" height="300.000000pt" viewBox="0 0 300.000000 300.000000"
+ preserveAspectRatio="xMidYMid meet">
+<metadata>
+Created by potrace 1.10, written by Peter Selinger 2001-2011
+</metadata>
+<g transform="translate(0.000000,300.000000) scale(0.100000,-0.100000)"
+fill="#4479FB" stroke="none">
+<path d="M4 2991 c-2 -2 -4 -676 -4 -1498 l0 -1493 1498 0 1497 0 -2 1495 -2
+1495 -1491 2 c-820 2 -1494 1 -1496 -1z m2774 -1494 l2 -1277 -1280 0 -1280 0
+0 1280 0 1280 1278 -2 1277 -3 3 -1278z"/>
+<path d="M630 1495 l0 -865 865 0 865 0 0 865 0 865 -865 0 -865 0 0 -865z
+m1570 5 l0 -700 -700 0 -700 0 0 700 0 700 700 0 700 0 0 -700z"/>
+<path d="M1210 1495 l0 -285 290 0 290 0 0 285 0 285 -290 0 -290 0 0 -285z
+m410 0 l0 -125 -120 0 -120 0 0 125 0 125 120 0 120 0 0 -125z"/>
+</g>
+</svg>