Update templates (#13)

* chore: update issue templates

* chore: update PR template

* chore: update templates

.github/ISSUE_TEMPLATE/question_about_source_code.md

@@ -0,0 +1,28 @@
+---
+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 (e.g., `lib/src/platforms/android/nearby_android_service.dart`)
+
+### Code Snippet
+Include a code snippet from the source code in question
+
+```dart
+// Example source code snippet
+  @override
+  FutureOr<bool> send(OutgoingNearbyMessage message) {
+    return _socketService.send(message);
+  }
+```
+---
+
+Your effort is appreciated 💗