Fix logo transparency and add extra platforms in doap file

conversejs.doap

@@ -10,6 +10,9 @@
     <category rdf:resource="https://linkmauve.fr/ns/xmpp-doap#category-client"/>
     <programming-language>JavaScript</programming-language>
     <os>Browser</os>
+    <os>Linux</os>
+    <os>macOS</os>
+    <os>Windows</os>
     <schema:logo rdf:resource="https://raw.githubusercontent.com/conversejs/converse.js/master/logo/conversejs-filled.svg"/>
     <repository>
       <GitRepository>

logo/conversejs-filled.svg

@@ -6,6 +6,7 @@
 <title>Converse</title>
 <g class="cls-1" id="g904">
     <g data-name="Layer 2">
+        <circle cx="180" cy="180" r="170" stroke="black" stroke-width="3" fill="white"/>
         <g data-name="Layer 7">
             <path
                 class="cls-3"

logo/conversejs-transparent.svg

@@ -0,0 +1,19 @@
+<svg class="converse-svg-logo"
+    xmlns:svg="http://www.w3.org/2000/svg"
+    xmlns="http://www.w3.org/2000/svg"
+    xmlns:xlink="http://www.w3.org/1999/xlink"
+    viewBox="0 0 364 364">
+<title>Converse</title>
+<g class="cls-1" id="g904">
+    <g data-name="Layer 2">
+        <g data-name="Layer 7">
+            <path
+                class="cls-3"
+                d="M221.46,103.71c0,18.83-29.36,18.83-29.12,0C192.1,84.88,221.46,84.88,221.46,103.71Z" />
+            <path
+                class="cls-4"
+                d="M179.9,4.15A175.48,175.48,0,1,0,355.38,179.63,175.48,175.48,0,0,0,179.9,4.15Zm-40.79,264.5c-.23-17.82,27.58-17.82,27.58,0S138.88,286.48,139.11,268.65ZM218.6,168.24A79.65,79.65,0,0,1,205.15,174a12.76,12.76,0,0,0-6.29,4.65L167.54,222a1.36,1.36,0,0,1-2.46-.8v-35.8a2.58,2.58,0,0,0-3.06-2.53c-15.43,3-30.23,7.7-42.73,19.94-38.8,38-29.42,105.69,16.09,133.16a162.25,162.25,0,0,1-91.47-67.27C-3.86,182.26,34.5,47.25,138.37,25.66c46.89-9.75,118.25,5.16,123.73,62.83C265.15,120.64,246.56,152.89,218.6,168.24Z" />
+        </g>
+    </g>
+</g>
+</svg>