ci: Update issue templates

Author: DeRuina

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,8 +1,8 @@
 ---
 name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: ''
+about: Report a reproducible problem
+title: "[BUG] brief description"
+labels: bug
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,29 @@
+---
+name: Feature request
+about: Suggest an enhancement or new capability
+title: "[FEATURE] brief description"
+labels: ''
+assignees: ''
+
+---
+
+### 💡 Feature request
+
+**Describe the problem**  
+What problem are you trying to solve or what limitation did you encounter?
+
+---
+
+**Proposed solution / API**  
+Describe the new behavior or API and how you expect it to work.  
+Include short examples or pseudo-code if helpful.
+
+```go
+// Example
+tj := &timberjack.Logger{
+    Filename:    "app.log",
+    RotateEvery: time.Hour, // new option for fixed-interval rotation
+}
+```
+**Benefits**
+Explain why this change improves the library, user experience, or performance.