feat: add CollaboratorPicker component and integrate into CollaboratorScheduleSummaryFlow

- Implemented CollaboratorPicker for selecting employees with support for single and multiple selections.
- Created CollaboratorScheduleSummaryFlow to display collaborator schedules and exceptions.
- Added ServicePublicationFlow for managing service visibility on public pages.
- Introduced CSS styles for ServicePrivate component to enhance UI.

txclient/src/app/admin/assistant/components/QuestionCard/QuestionCard.module.css

@@ -72,6 +72,19 @@
     transform: translateY(-2px);
     box-shadow: 0 6px 20px rgba(128, 0, 32, 0.3);
 }
+
+.nextButton:disabled {
+    cursor: not-allowed;
+    opacity: 0.55;
+    transform: none;
+    box-shadow: none;
+}
+
+.nextButton:disabled:hover {
+    transform: none;
+    box-shadow: none;
+}
+
 .pressEnterText {
     font-size: 13px;
     color: #6b7280;