feat(github): add code of conduct

.github/CODE_OF_CONDUCT.md

@@ -0,0 +1,8 @@
+Project participants must adhere to the following conduct:
+
+1. Follow the [contributor convenant](https://www.contributor-covenant.org/version/1/4/code-of-conduct.html)
+2. When contributing information to TDS in code or discussions, do not include any sensitive information that may compromise
+   yourself, or TELUS and its respective entities
+3. When participating in issues, try to stay on topic. If you have a concern not directly related to an existing issue
+   you are welcome to [report a new issue](https://github.com/telusdigital/tds/issues/new?template=defect_template.md)
+   or [suggest a new feature](https://github.com/telusdigital/tds/issues/new?template=feature_template.md)