update featrue_request issue temple (#715)

Compared with markdown, yaml may be more focused on the required
information, and will not easily destroy the content in the template.
And I think the "feature request" might not require users to upload
their logs.

It looks like this:


![Screenshot_2023-07-03-22-53-28-88_a252b927494330cdc2c8ba3b3f952e5e](https://github.com/tiann/KernelSU/assets/79307765/ef15e532-2d69-4dea-ba7a-326b7fa2e0ef)

Co-authored-by: dabao1955 <195328750@qq.com>

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,20 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: ''
-assignees: ''
-
----
-
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
-
-**Additional context**
-Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,40 @@
+name: Feature Request
+description: "Suggest an idea for this project"
+title: "[Feature]"
+labels: "feature"
+assignees: tiann
+body:
+  - type: markdown
+    id: feature-info
+    attributes:
+      value: "## Feature Infomation"
+  - type: textarea
+    id: feature-main
+    validations:
+      required: true
+    attributes:
+      label: "Is your feature request related to a problem? Please describe."
+      description: "A clear and concise description of what the problem is."
+      placeholder: "I'm always frustrated when [...]"
+  - type: textarea
+    id: feature-solution
+    validations:
+      required: true
+    attributes:
+      label: "Describe the solution you'd like."
+      description: "A clear and concise description of what you want to happen."
+  - type: textarea
+    id: feature-describe
+    validations:
+      required: true
+    attributes:
+      label: "Describe alternatives you've considered."
+      description: "A clear and concise description of any alternative solutions or features you've considered."
+  - type: textarea
+    id: feature-extra
+    validations:
+      required: false
+    attributes:
+      label: "Additional context"
+      description: "Add any other context or screenshots about the feature request here."
+