Add feature request issue template (#816)

* added feature issue template

* Update grammar

Co-authored-by: Richie Bendall <richiebendall@gmail.com>

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,24 @@
+---
+name: '✨ Feature Request'
+about: Suggest an idea or feature
+title: 'Feature request: '
+labels: feature
+assignees: ''
+
+---
+
+**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 [...] -->
+
+**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. -->