add owners file and issue template (#7)

.github/CODEOWNERS

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+# Code owners file.
+# This file controls who is tagged for review for any given pull request.
+
+# For anything not explicitly taken by someone else:
+*       @g-easy @jmacd @maxgolov @reyang @rnburn @tigrannajaryan

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Create a report to help us improve
+labels: bug
+---
+
+**Describe your environment** Describe any aspect of your environment relevant to the problem, including your platform, build system, version numbers of installed dependencies, etc. If you're reporting a problem with a specific version of a library in this repo, please check whether the problem has been fixed on master.
+
+**Steps to reproduce**
+Describe exactly how to reproduce the error. Include a code sample if applicable.
+
+**What is the expected behavior?**
+What did you expect to see?
+
+**What is the actual behavior?**
+What did you see instead?
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest an idea for this project
+labels: feature-request
+---
+
+Before opening a feature request against this repo, consider whether the feature should/could be implemented in the [other OpenTelemetry client libraries](https://github.com/open-telemetry/). If so, please [open an issue on opentelemetry-specification](https://github.com/open-telemetry/opentelemetry-specification/issues/new) first.
+
+**Is your feature request related to a problem?**
+If so, provide a concise description of the problem.
+
+**Describe the solution you'd like**
+What do you want to happen instead? What is the expected behavior?
+
+**Describe alternatives you've considered**
+Which alternative solutions or features have you considered?
+
+**Additional context**
+Add any other context about the feature request here.