Updated feature request template (#11412)

* Updated feature request template

Signed-off-by: Brian Choromanski <BrianChoromanski@gmail.com>

* Added newline to the end of file

Signed-off-by: Brian Choromanski <BrianChoromanski@gmail.com>

* Ran yamllint on feature_request.yml

Signed-off-by: Brian Choromanski <BrianChoromanski@gmail.com>

* Made proposal required

Signed-off-by: Brian Choromanski <BrianChoromanski@gmail.com>

Signed-off-by: Brian Choromanski <BrianChoromanski@gmail.com>

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,26 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project.
-title: ''
-labels: ''
-assignees: ''
----
-
-<!--
-
-    Please do *NOT* ask support questions in Github issues.
-
-    If your issue is not a feature request or bug report use our
-    community support.
-
-    https://prometheus.io/community/
-
-    There is also commercial support available.
-
-    https://prometheus.io/support-training/
-
--->
-## Proposal
-**Use case. Why is this important?**
-
-*“Nice to have” is not a good use case. :)*

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,23 @@
+---
+name: Feature request
+description: Suggest an idea for this project.
+body:
+  - type: markdown
+    attributes:
+      value: >-
+        Please do *NOT* ask support questions in Github issues.
+
+
+        If your issue is not a feature request or bug report use
+        our [community support](https://prometheus.io/community/).
+
+
+        There is also [commercial
+        support](https://prometheus.io/support-training/) available.
+  - type: textarea
+    attributes:
+      label: Proposal
+      description: Use case. Why is this important?
+      placeholder: “Nice to have” is not a good use case. :)
+    validations:
+      required: true