Add before creating request to feature.yml

and encourage searching

.github/ISSUE_TEMPLATE/feature.yml

@@ -8,6 +8,15 @@ labels:
 assignees:
   - null
 body:
+  - type: markdown
+    attributes:
+      value: "## BEFORE CREATING A FEATURE REQUEST"      
+  - type: markdown
+    attributes:
+      value: |
+            Please try a nightly build from: https://nightly.vba-m.com to see if your idea has already been implemented.
+            On Linux build master from source or use the edge snap.
+            And last but not least, search for existing requests via the filters bar on the issues page.
   - type: textarea
     id: feature-request
     attributes: