New app icon: Phone handset with signal waves

- Replace chat bubble icon with clear phone design
- Orange gradient background maintained
- Phone handset symbol with connection waves
- All sizes regenerated (16x16 to 1024x1024)
- SVG source included for future modifications

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Linphone/data/icon/new_icon.svg

@@ -0,0 +1,22 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <defs>
+    <linearGradient id="bgGradient" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#FF6B35"/>
+      <stop offset="100%" style="stop-color:#E54D12"/>
+    </linearGradient>
+  </defs>
+
+  <!-- Background rounded square -->
+  <rect x="32" y="32" width="448" height="448" rx="80" ry="80" fill="url(#bgGradient)"/>
+
+  <!-- Phone handset - classic design, scaled and centered -->
+  <g transform="translate(128, 128) scale(1.0)">
+    <path d="M231.88,175.08A56.26,56.26,0,0,1,176,224C96.6,224,32,159.4,32,80A56.26,56.26,0,0,1,80.92,24.12a16,16,0,0,1,16.62,9.52l21.12,47.15,0,.12A16,16,0,0,1,117.39,96c-.18.27-.37.52-.57.77L96,121.45c7.49,15.22,23.41,31,38.83,38.51l24.34-20.71a8.12,8.12,0,0,1,.75-.56,16,16,0,0,1,15.17-1.4l.13.06,47.11,21.11A16,16,0,0,1,231.88,175.08Z" fill="white"/>
+  </g>
+
+  <!-- Connection wave lines -->
+  <g stroke="white" stroke-width="14" fill="none" stroke-linecap="round" opacity="0.85">
+    <path d="M340,180 Q400,256 340,332" />
+    <path d="M380,140 Q460,256 380,372" />
+  </g>
+</svg>