Convert issue templates to issues forms (#10793)

* Convert the bug-report template to issue form

* Convert the enchancement issue template to form

* Convert "Failing Test" template to issue form

* github: Remove support request template, direct to slack instead

.github/ISSUE_TEMPLATE/enhancement.yaml

@@ -0,0 +1,20 @@
+---
+name: Enhancement Request
+description: Suggest an enhancement to the Kubespray project
+labels: kind/feature
+body:
+  - type: markdown
+    attributes:
+      value: Please only use this template for submitting enhancement requests
+  - type: textarea
+    id: what
+    attributes:
+      label: What would you like to be added
+    validations:
+      required: true
+  - type: textarea
+    id: why
+    attributes:
+      label: Why is this needed
+    validations:
+      required: true