add issue template for feature requests

.github/ISSUE_TEMPLATE/feature_request_form.yaml

@@ -0,0 +1,33 @@
+name: Feature Request
+description: Suggest a new idea for Consul.NET
+title: "[FEATURE REQUEST]: <title>"
+labels: [ "Feature Request" ]
+
+body:
+  - type: textarea
+    id: related-problem
+    attributes:
+      label: Is your feature request related to a problem? Please describe.
+      description: A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+    validations:
+      required: true
+
+  - type: textarea
+    id: describe-solution
+    attributes:
+      label: Describe the solution you'd like
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: describe-alternatives
+    attributes:
+      label: Describe alternatives you've considered
+      description: A clear and concise description of any alternative solutions or features you've considered.
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context
+      description: Add any other context or screenshots about the feature request here.