fix(webapp): some flag icons are missing

packages/webapp/public/icons/currency-flags/CHF.svg

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="21px" height="15px" viewBox="0 0 21 15" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <!-- Generator: sketchtool 46 (44423) - http://www.bohemiancoding.com/sketch -->
+    <title>CH</title>
+    <desc>Created with sketchtool.</desc>
+    <defs>
+        <linearGradient x1="50%" y1="0%" x2="50%" y2="100%" id="linearGradient-1">
+            <stop stop-color="#FFFFFF" offset="0%"></stop>
+            <stop stop-color="#F0F0F0" offset="100%"></stop>
+        </linearGradient>
+        <linearGradient x1="50%" y1="100%" x2="50%" y2="3.061617e-15%" id="linearGradient-2">
+            <stop stop-color="#FF0000" offset="0%"></stop>
+            <stop stop-color="#FF3131" offset="100%"></stop>
+        </linearGradient>
+    </defs>
+    <g id="Symbols" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="CH">
+            <rect id="FlagBackground" fill="url(#linearGradient-1)" x="0" y="0" width="21" height="15"></rect>
+            <rect id="Mask-Copy" fill="url(#linearGradient-2)" x="0" y="0" width="21" height="15"></rect>
+            <path d="M9,9 L6.25577831,9 C6.11451585,9 6,8.88605976 6,8.74422169 L6,6.25577831 C6,6.11451585 6.11394024,6 6.25577831,6 L9,6 L9,3.25577831 C9,3.11451585 9.11394024,3 9.25577831,3 L11.7442217,3 C11.8854841,3 12,3.11394024 12,3.25577831 L12,6 L14.7442217,6 C14.8854841,6 15,6.11394024 15,6.25577831 L15,8.74422169 C15,8.88548415 14.8860598,9 14.7442217,9 L12,9 L12,11.7442217 C12,11.8854841 11.8860598,12 11.7442217,12 L9.25577831,12 C9.11451585,12 9,11.8860598 9,11.7442217 L9,9 Z" id="Combined-Shape" fill="url(#linearGradient-1)"></path>
+        </g>
+    </g>
+</svg>