Add labeler and updates issues templates

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,5 +1,5 @@
 ---
-name: Feature request
+name: 🗳️ Feature request
 about: Suggest an idea for this project
 title: ''
 labels: enhancement
@@ -7,8 +7,21 @@ assignees: ''
 
 ---
 
-**Feature description**
-<!-- A clear and concise description of what the problem is. -->
+<!--
 
-**Additional context**
-<!-- Add any other context or screenshots about the feature request here. -->
+  👋 Hi there!
+  Thanks for using metrics and helping us to improve!
+
+  Please check the following before filling a feature request:
+    - It does not duplicate another existing issue
+    - It is not mentioned in https://github.com/lowlighter/metrics/projects/1
+
+  For plugin requests...
+    - Add "plugin" label
+    - Optionally add screenshots or additional context
+
+  For other requests...
+    - Just write a clear and concise description about the feature request
+    - Optionally add screenshots or additional context
+
+-->