Update issue templates (#12)

.github/ISSUE_TEMPLATE/question-about-source-code.md

@@ -0,0 +1,25 @@
+---
+name: Question about source code
+about: Ask a question about source code here
+title: "[QUESTION]: "
+labels: question
+assignees: ksenia312
+
+---
+
+### Question
+Provide your question here
+
+### Source Code Path
+Specify the path to the source code you are referring to. (e.g., `lib/src/platforms/android/nearby_android_service.dart`)
+
+### Code Snippet
+Include a code snippet from the source code in question. Ensure to provide enough context to understand the issue.
+
+```dart
+// Example source code snippet
+  @override
+  FutureOr<bool> send(OutgoingNearbyMessage message) {
+    return _socketService.send(message);
+  }
+```