github: add feature request template

 Add template for requesting new CANnectivity features and enhancements.

Signed-off-by: Henrik Brix Andersen <[email protected]>

.github/ISSUE_TEMPLATE/002_feature_request.md

@@ -0,0 +1,18 @@
+---
+name: Feature request
+about: Suggest a new feature for CANnectivity
+title: ''
+labels: enhancement
+assignees: ''
+---
+
+## Describe the requested feature
+<!-- A clear and concise description of the feature being requested. -->
+
+## Describe alternatives considered
+<!-- A clear and concise description of alternatives already considered. -->
+
+## Additional context
+<!--
+Add any other context that could be relevant to your request.
+-->