added issue and pull request templates

Author: edsnider

.github/ISSUE_TEMPLATE.md

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+If this issue is for a new feature, please skip the "Bug" section and fill out the "Feature Request" section at the bottom.
+
+## Bug
+
+Plugin Version:  
+Platform (e.g., Android v21):  
+Device/Hardware:  
+
+### Expected behavior
+
+### Actual behavior
+
+### Steps to reproduce the behavior
+- 
+- 
+
+
+## Feature Request
+
+Feature description:  

.github/PULL_REQUEST_TEMPLATE.md

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+Fixes issue # .  
+
+### Changes proposed in this pull request:  
+- 
+- 
+-