Issue templates: use issue types (#4121)

Co-authored-by: Aman Mahajan <amahajan@stratag.com>

Author: nstepien

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,6 +2,7 @@
 name: Bug report
 about: Create a bug report
 title: ''
+type: Bug
 labels: 'Status: Unconfirmed'
 assignees: ''
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,7 +2,7 @@
 name: Feature request
 about: Request a new feature or enhancement
 title: ''
-labels: Feature Request
+type: Feature
 assignees: ''
 ---