Update issue templates

Author: csharpfritz

.github/ISSUE_TEMPLATE/use-case.md

@@ -0,0 +1,16 @@
+---
+name: Use Case
+about: Sample use case for an ASPX page that should be supported
+title: 'Use Case:'
+labels: ''
+assignees: ''
+
+---
+
+### Describe your usage scenario
+
+### Provide some sample code to illustrate
+
+```html
+<Sample Code Here />
+```