Update issue templates (#1531)

Co-authored-by: Gabefire <33893811+Gabefire@users.noreply.github.com>

Author: adrian-chang

.github/ISSUE_TEMPLATE/bug_report.md

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+# Describe the bug
+A clear and concise description of what the bug is.
+
+# To reproduce
+Steps to reproduce the behavior:
+1. Use method '...'
+2. Pass parameters '...'
+3. See error
+
+# Expected behavior
+A clear and concise description of what you expected to happen.
+
+# Screenshots / Videos
+If applicable, add screenshots or videos to help explain your problem.
+
+# Environment (please complete the following information
+ - OS: [e.g. iOS]
+ - Python Version: [e.g. 3.8.12]
+ - SDK + SDK Version: [e.g. labelbox@3.70.0 / labelbox[data]@3.71.0]
+ - Python Environment [e.g. pip freeze > requirements.txt]
+
+# Additional context
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+# Is your feature request related to a problem? Please describe.
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+# Describe the solution you'd like
+A clear and concise description of what you want to happen.
+
+# Describe alternatives you've considered
+A clear and concise description of any alternative solutions or features you've considered.
+
+# Additional context
+Add any other context or screenshots about the feature request here.

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

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+# Description
+
+Please include a summary of the changes and the related issue. Please also include relevant motivation and context.
+
+Fixes # (issue)
+
+## 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)
+- [ ] Document change (fix typo or modifying any markdown files, code comments or anything in the examples folder only)
+
+## All Submissions
+
+- [ ] Have you followed the guidelines in our Contributing document?
+- [ ] Have you provided a description?
+- [ ] Are your changes properly formatted?
+
+## New Feature Submissions
+
+- [ ] Does your submission pass tests?
+- [ ] Have you added thorough tests for your new feature?
+- [ ] Have you commented your code, particularly in hard-to-understand areas?
+- [ ] Have you added a Docstring?
+
+## Changes to Core Features
+
+- [ ] Have you written new tests for your core changes, as applicable?
+- [ ] Have you successfully run tests with your changes locally?
+- [ ] Have you updated any code comments, as applicable?