added feature template

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,19 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ""
+labels: "Priority: Idea, Type: Feature"
+assignees: ""
+---
+
+_As a [type of user] I want to [...] in order to [achieve XY goal]._
+A short summary of the feature: Who would use this new feature? And what is the objective or use case in real life?
+
+**Objective**
+Elaborate on the use case and the goals the user wants to achieve. This is independent of the exact feature in the app and helps us to think of other designs that might serve that objective even better.
+
+**Proposed Solutions & Alternatives**
+A clear and concise description of the proposed solution for our app, including possible alternatives you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.