feat: Support for conversational streaming (#809)

### What problem does this PR solve?

feat: Support for conversational streaming
#709

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/en.ts

@@ -25,6 +25,7 @@ export default {
       comingSoon: 'Coming Soon',
       download: 'Download',
       close: 'Close',
+      preview: 'Preview',
     },
     login: {
       login: 'Sign in',
@@ -381,6 +382,7 @@ export default {
       partialTitle: 'Partial Embed',
       extensionTitle: 'Chrome Extension',
       tokenError: 'Please create API Token first!',
+      searching: 'searching...',
     },
     setting: {
       profile: 'Profile',