Add github workflow

.github/CODEOWNERS

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+# CODEOWNERS: https://help.github.com/articles/about-codeowners/
+
+# NOTE: Order is important; the last matching pattern takes the
+# most precedence.
+
+# People who get pinged on every PR, request if you'd like to be added
+       @sge-network/chain-core-reviewer

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+
+<!-- Add a description of the changes that this PR introduces and the files that
+are the most critical to review. -->
+
+---
+
+## Type of change
+
+Please delete options that are not relevant.
+
+- [ ] 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)
+- [ ] This change requires a documentation update
+
+
+## Added Features
+
+- [ ]
+
+---
+
+## Modified Features
+
+- [ ]
+
+---
+
+## Test Cases
+
+- [ ] Test A
+- [ ] Test B
+
+---
+
+## Change Log
+
+---
+
+## Documentation
+
+
+---
+
+## Checklist:
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes
+---