[mod] github: convert issue templates to yaml forms

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -0,0 +1,45 @@
+name: Feature request
+description: Request a new feature in SearXNG
+labels: ["new feature"]
+type: feature
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A concise description of the feature.
+    validations:
+      required: true
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Is your feature request related to a problem?
+      description: A clear and concise description of what the problem is.
+      placeholder: I'm always frustrated when [...]
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Describe the solution you'd like
+      description: A clear and concise description of what you want to happen.
+      placeholder: I want to be able to [...]
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Describe alternatives you've considered
+      description: A clear and concise description of any alternative solutions or features you've considered.
+      placeholder: I've considered [...]
+
+  - type: checkboxes
+    id: ai-policy
+    attributes:
+      label: Code of Conduct
+      options:
+        - label: >
+            I read the [AI Policy](https://github.com/searxng/searxng/blob/master/AI_POLICY.rst)
+            and hereby confirm that this issue conforms with the policy.
+          required: true