Update issue templates

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,7 +1,7 @@
 ---
 name: Feature request
 about: Suggest an idea for this project
-title: ''
+title: "[Enhancement] YOUR IDEA!"
 labels: t/enhancement ➕
 assignees: ''
 

.github/ISSUE_TEMPLATE/forms-previewer-bug-report.md

@@ -0,0 +1,43 @@
+---
+name: Forms Previewer Bug report
+about: Having a problem with the Previewer? Report it here!
+title: ''
+labels: forms-previewer
+assignees: ''
+
+---
+
+<!-- Bug report best practices: https://github.com/xamarin/Xamarin.Forms/wiki/Submitting-Issues -->
+
+### Description
+
+### Steps to Reproduce
+
+1. 
+2. 
+3. 
+
+### Expected Behavior
+
+### Actual Behavior
+
+### Basic Information
+
+- Version with issue:
+- Last known good version:
+- IDE:
+- Platform Target Frameworks: <!-- All that apply -->
+  - iOS:  <!-- The version of the iOS SDK you are compiling against, e.g. 11.1 -->
+  - Android: <!-- The version of the Android SDK you are compiling against, e.g. 7.1 --> 
+  - UWP:  <!-- The version of the UWP SDK you are compiling against, e.g. 16299 --> 
+- Android Support Library Version: <!-- if applicable -->
+- Nuget Packages:
+- Affected Devices:
+
+### Screenshots
+
+<!-- If the issue is a visual issue, please include screenshots showing the problem if possible -->
+
+### Reproduction Link
+
+<!-- Please upload or provide a link to a reproduction case -->