revert: #1382 - migrate feature request template to YAML form (#1410)

Author: aklinker1

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,23 @@
+---
+name: Feature request
+about: Suggest an idea for WXT
+title: ''
+labels: feature
+assignees: ''
+---
+
+### Feature Request
+
+Please describe your feature, be clear and concise. If you have a proposal for required type or API changes, list them here.
+
+#### Is your feature request related to a bug?
+
+If so, add a link here. If not, write "N/A"
+
+### What are the alternatives?
+
+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.