add feature request form

Signed-off-by: dartcafe <github@dartcafe.de>

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.yml

@@ -0,0 +1,40 @@
+name: "Feature request: Nextcloud Polls"
+description: "Suggest your idea for the improvement of Polls"
+labels: ["enhancement"]
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ### 👍 Thank you for your time to contributing to our project!
+        Please check the entered title, that it describes your request as accurate as possible to help other users to find already submitted feature requests
+  - type: checkboxes
+    id: before-posting
+    attributes:
+      label: "⚠️ This issue respects the following points: ⚠️"
+      description: All conditions are **required**. Your issue can be closed if these are checked incorrectly.
+      options:
+        - label: I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).
+          required: true
+  - type: textarea
+    id: user-story
+    attributes:
+      label: Describe the goal you'd like to achieve
+      description: |
+        Describe what (goal) you want to achieve and why (value). Please explain your goal and why this is valuable and 
+        **do not** describe the solution you suggest. Try to use the [user story](https://en.wikipedia.org/wiki/User_story) pattern
+    value: As a **[poll participant/poll owner/...]**, I want to **[be able to .../ don't want to ...]**, because **[it helps to ... /avoids ...]**.
+    validations:
+      required: true
+  - type: textarea
+    id: suggested-solution
+    attributes:
+      label: Describe possible solutions
+      description: If you have a proposal for a way to get to the goal stated above, describe it here.
+      placeholder: Suggest a solution, how your value can be earned
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context 
+      description: |
+        Add a screenshot or a mockup for your UI suggestion or add more context to understand the reason, why you thing this is a valuable request.