meta: add feature request template (#63)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Create a report to help us improve
 title: ''
-labels: bug
+labels: ''
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,26 @@
+---
+name: Feature request
+about: Suggest a feature for this project
+title: 'feat: <Feature request>'
+labels: feat
+assignees: ''
+
+---
+
+# Feature request
+
+|          Title           | Revision |
+|-----------------------|--------------|
+| <Feature title> |              1 |
+
+## Initial problem
+A clear and concise description of what the problem is.
+
+## Proposed solution
+A clear and concise description of what you want to happen. Please specify if it has consequences on already existing features (e.g. a breaking change).
+
+## Rejected ideas
+A clear and concise description of any alternative solutions or features you've considered.
+
+## Considerations and technicalities
+Details that you think matter, and some ideas on how to implement the solution more concretely.