End call when connection is lost

- Automatically end call when WebRTC connection is lost
- Remove state when in call

GitLab: 182
Change-Id: I259eccda82db7304542bef863c429c9313b4145a
diff --git a/client/src/components/ConversationListItem.tsx b/client/src/components/ConversationListItem.tsx
index 03685c3..e9e97b8 100644
--- a/client/src/components/ConversationListItem.tsx
+++ b/client/src/components/ConversationListItem.tsx
@@ -141,7 +141,7 @@
         Icon: AudioCallIcon,
         onClick: () => {
           if (conversationId) {
-            startCall(conversationId);
+            startCall(conversationId, 'caller');
           }
         },
       },
@@ -150,7 +150,7 @@
         Icon: VideoCallIcon,
         onClick: () => {
           if (conversationId) {
-            startCall(conversationId, {
+            startCall(conversationId, 'caller', {
               isVideoOn: true,
             });
           }
diff --git a/client/src/components/ConversationView.tsx b/client/src/components/ConversationView.tsx
index 064efcf..146f049 100644
--- a/client/src/components/ConversationView.tsx
+++ b/client/src/components/ConversationView.tsx
@@ -83,10 +83,10 @@
         </Typography>
       </Stack>
       <Stack direction="row" spacing="20px">
-        <StartAudioCallButton onClick={() => startCall(conversationId)} />
+        <StartAudioCallButton onClick={() => startCall(conversationId, 'caller')} />
         <StartVideoCallButton
           onClick={() =>
-            startCall(conversationId, {
+            startCall(conversationId, 'caller', {
               isVideoOn: true,
             })
           }