Added a beta feedback issue form

.github/ISSUE_TEMPLATE/beta-feedback.yaml

@@ -0,0 +1,19 @@
+name: Beta Feedback
+description: Give constructive feedback on the beta version of the plugin.
+title: "[Feedback]: "
+labels: ["beta"]
+assignees:
+  - MaelImhof
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for testing the beta version and to take the time to give feedback!
+  - type: textarea
+    id: explanation
+    attributes:
+      label: Feedback
+      description: Any constructive feedback is appreciated, even (especially) if everything seems to be working.
+      placeholder: "What a wonderful plugin (or not)! I think that..."
+    validations:
+      required: true