docs: Update issue templates (#499)

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.yml

@@ -1,44 +0,0 @@
-name: "\U0001F680 Feature request"
-description: Suggest an idea for improving the container
-title: "[Feature]: "
-labels: ["enhancement"]
-body:
-  - type: checkboxes
-    attributes:
-      label: Is there an existing feature request for this?
-      description: Please search to see if the feature request already exists.
-      options:
-      - label: I have searched the existing feature requests
-        required: true
-  - type: textarea
-    id: problem
-    attributes:
-      label: Is your proposal related to a problem?
-      description: |
-        Provide a clear and concise description of what the problem is.
-        For example, "I'm always frustrated when..."
-    validations:
-      required: true
-  - type: textarea
-    id: solution
-    attributes:
-      label: Describe the solution you'd like.
-      description: |
-        Provide a clear and concise description of what you want to happen.
-    validations:
-      required: true
-  - type: textarea
-    id: alternatives
-    attributes:
-      label: Describe alternatives you've considered.
-      description: |
-        Let us know about other solutions you've tried or researched.
-    validations:
-      required: true
-  - type: textarea
-    id: context
-    attributes:
-      label: Additional context
-      description: |
-        Is there anything else you can add about the proposal?
-        You might want to link to related issues here, if you haven't already.