Updates GH templates to use types

Author: eamodio

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,5 +1,6 @@
 name: Bug report
 description: Create a report to help GitLens improve
+type: 'Bug'
 labels: ['bug', 'triage']
 body:
     - type: textarea

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,11 @@
+name: Enhancement or feature request
+description: Suggest an enhancement, feature, or idea for GitLens
+type: 'Enhancement'
+labels: [feature, triage]
+body:
+  - type: textarea
+    attributes:
+      label: Description
+      description: Please describe the enhancement or feature you'd like to see in GitLens.
+    validations:
+      required: false