add issue and pr template

.github/ISSUE_TEMPLATE.md

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+Please ensure your issue adheres to the following guidelines:
+
+- [ ] Search previous issue before making a new one, as yours may be a duplicate.
+- [ ] Use a simple _distinguishable_ sentence which can describe your problem.
+
+## *What* is affected by this bug?
+Eg. building failed, memory leak, program terminated or analysis mistake.
+
+## *When* does this occur?
+Eg. when analyze the sentence "xxx", when the program run for about 4 hours. (Does it possibly occur or occur every time?)
+
+## *Where* on the code does it happen?
+Eg. when i call the api xxx and then call xxx the program will crash. (show the process code if needed.)
+
+## *How* do we replicate the issue?
+Please be specific as possible. Use dashes (-) or numbers (1.) to create a list of steps
+
+## Your environment information
+OS, languages, IDE and it's version, and other related tools, environment variables, the way you insert the code to your project.
+
+## Expected behavior (i.e. solution)
+<!-- What should have happened? -->
+
+## Other Comments

.github/PULL_REQUEST_TEMPLATE.md

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+<!--- Provide a general summary of your changes in the Title above -->
+
+## Description Changes
+Describe your changes in detail
+
+## Motivation and Context
+<!--- Why is this change required? What problem does it solve? -->
+<!--- If it fixes an open issue, please link to the issue here. -->
+
+## How Has This Been Tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, tests ran to see how -->
+<!--- your change affects other areas of the code, etc. -->
+
+## Screenshots (if appropriate):
+
+## Types of changes
+<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+
+## Checklist:
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] My code follows the code style of this project.
+- [ ] My change requires a change to the documentation.
+- [ ] I have updated the documentation accordingly.