convert issue templates into issue forms (#1115)

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,39 @@
+name: Feature request
+description: Suggest an idea for this project
+title: '[Feature request] '
+
+body:
+  - type: textarea
+    id: description-of-bug
+    attributes:
+      label: Is your feature request related to a problem? Please describe.
+      description: A clear and concise description of what the problem is that made you submit this report.
+      placeholder: I am always frustrated, when...
+    validations:
+      required: true
+
+  - type: textarea
+    id: description-of-solution
+    attributes:
+      label: Solution you would like.
+      description: A clear and concise description of what you want to happen.
+      placeholder: Instead of behaving like this, there should be...
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Describe alternatives you have considered.
+      description: A clear and concise description of any alternative solutions or features you have considered.
+      placeholder: Another workaround that would work, is...
+    validations:
+      required: false
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context
+      description: Add any other context (such as mock-ups, proof of concepts or screenshots) about the feature request here.
+    validations:
+      required: false