Update issue templates

Added feature request template

Author: alltheseas

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,27 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: 'Feature Request:'
+labels: feature
+assignees: ''
+
+---
+
+## Have a go at filling out the User Story template below
+
+As a Damus user who is _____________, I would like to _________________, so that I achieve ___________.
+
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+** When does this problem happen? **
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.