chore(slint): add home-gear icon asset

Add the home-gear.svg icon used by the Discover toolbar sort gear
button.

cc

crates/qbz-slint/ui/assets/icons/home-gear.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+    <g>
+        <path fill="none" d="M0 0h24v24H0z"/>
+        <path d="M19 21H5a1 1 0 0 1-1-1v-9H1l10.327-9.388a1 1 0 0 1 1.346 0L23 11h-3v9a1 1 0 0 1-1 1zM6 19h12V9.157l-6-5.454-6 5.454V19zm2.591-5.191a3.508 3.508 0 0 1 0-1.622l-.991-.572 1-1.732.991.573a3.495 3.495 0 0 1 1.404-.812V8.5h2v1.144c.532.159 1.01.44 1.404.812l.991-.573 1 1.731-.991.573a3.508 3.508 0 0 1 0 1.622l.991.572-1 1.731-.991-.572a3.495 3.495 0 0 1-1.404.811v1.145h-2V16.35a3.495 3.495 0 0 1-1.404-.811l-.991.572-1-1.73.991-.573zm3.404.688a1.5 1.5 0 1 0 0-2.998 1.5 1.5 0 0 0 0 2.998z"/>
+    </g>
+</svg>