Change issue template from markdown to issue form

Signed-off-by: Jin Dong <[email protected]>

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -0,0 +1,36 @@
+name: Bug report
+description: Create a bug report to help improve soci-snapshotter
+title: "[Bug] "
+labels: ["bug"]
+body:
+  - type: textarea
+    attributes:
+      label: Description
+      description: |
+        Briefly describe the problem/bug you are having.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to reproduce the bug
+
+  - type: textarea
+    attributes:
+      label: Describe the results you expected
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Host information
+      value: |
+        1. OS: 
+        2. Snapshotter Version: 
+        3. Containerd Version: 
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Any additional context or information about the bug

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,9 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Ask a question (GitHub Discussions)
+    url: https://github.com/awslabs/soci-snapshotter/discussions
+    about: |
+      In most cases, GitHub Discussions is the preferred place to ask a question, 
+      and visible to more users. If you encountered a bug or request a feature, 
+      please use the issue template. Otherwise, please consider asking in GitHub
+      Discussions first.

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,24 @@
+name: Feature request
+description: Suggest an idea or new feature for this project
+title: "[FEATURE] "
+labels: ["feature"]
+body:
+  - type: textarea
+    attributes:
+      label: Description
+      description: |
+        Briefly describe the feature request and, if related to a problem, what the problem is.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Describe the solution you'd like
+
+  - type: textarea
+    attributes:
+      label: Describe any alternative solutions/features you've considered
+
+  - type: textarea
+    attributes:
+      label: Any additional context or information about the feature request

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,7 +1,7 @@
-*Issue #, if available:*
+**Issue #, if available:**
 
-*Description of changes:*
+**Description of changes:**
 
-*Testing performed:*
+**Testing performed:**
 
 By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.