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/failing-test.yaml

@@ -0,0 +1,41 @@
+---
+name: Failing Test
+description: Report test failures in Kubespray CI jobs
+labels: kind/failing-test
+body:
+  - type: markdown
+    attributes:
+      value: Please only use this template for submitting reports about failing tests in Kubespray CI jobs
+  - type: textarea
+    id: failing_jobs
+    attributes:
+      label: Which jobs are failing ?
+    validations:
+      required: true
+
+  - type: textarea
+    id: failing_tests
+    attributes:
+      label: Which tests are failing ?
+    validations:
+      required: true
+
+  - type: input
+    id: since_when
+    attributes:
+      label: Since when has it been failing ?
+    validations:
+      required: true
+
+  - type: textarea
+    id: failing_tests
+    attributes:
+      label: Reason for failure
+      description: If you don't know and have no guess, just put "Unknown"
+    validations:
+      required: true
+
+  - type: textarea
+    id: anything_else
+    attributes:
+      label: Anything else we need to know