Update issue templates

.github/ISSUE_TEMPLATE/port-request.md

@@ -0,0 +1,14 @@
+---
+name: Port request
+about: Suggest an app to port the theme to
+title: App
+labels: port request
+assignees: ''
+
+---
+
+**Are you available to help in the creation of this port? (optional)**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Additional context (optional)**
+Add any other context or screenshots about the port request here.