have call box

priv/static/js/ts/webrtc.ts

@@ -100,9 +100,28 @@ render_state
     let roster_ul = document.getElementById('roster-ul') as HTMLUListElement;
     let newChildren : Array<HTMLElement> = [];
     for (let nick of st.roster) {
-        let li = document.createElement('li');
-        li.innerText = nick;
-        newChildren.push(li);
+        if (!(nick === st.whoami)) {
+            let li = nickkk(nick);
+            newChildren.push(li);
+        }
     }
     roster_ul.replaceChildren(...newChildren);
 }
+
+function
+nickkk
+    (nick: string)
+    : HTMLElement
+{
+    let li = document.createElement('li');
+
+    li.innerText += nick;
+    li.innerText += ' ';
+
+    let call_a = document.createElement('button');
+    call_a.innerText = 'call';
+
+    li.appendChild(call_a);
+
+    return li;
+}