Fix/296: Added three template similar to pecan

.github/ISSUE_TEMPLATE/Bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+### Bug Description
+
+A clear and concise description of what the bug is.
+
+In the format "When I do X, I expect Y but observe Z"
+
+### To Reproduce
+
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+## Expected behavior
+
+A clear and concise description of what you expected to happen.
+
+## Screenshots
+
+If applicable, add screenshots to help explain your problem.
+
+## SIPNET Version
+
+ - Version or Git SHA [e.g. 2.1.0 or abc1234]
+
+## Additional context
+
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/Doc_changes.md

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+---
+name: Documentation Changes
+about: Create a report to help us improve
+
+---
+
+### Document Change needed
+
+A clear description of what changes are needed with the location of the error, or that needs to be fixed.
+
+Example: 
+There is a broken URL link in the documentation. It is in the parameters documentation. The underlying file is `docs/parameters.md`. The correct link should be https://aws.amazon.com/.
+
+### Information for those wanting to make changes
+
+Please refer to the documentation guidelines in `CONTRIBUTING.md` to learn how to make changes to the documentation.
+
+All markdown files related to documentation are located within the main directory `docs/`.

.github/ISSUE_TEMPLATE/Feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+## Description
+
+**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 [...]
+
+## Use Cases and Requirements
+
+**Describe the use cases and requirements**
+Please focus on describing the problem and your requirements without going into the solution space. We believe in understanding requirements before design, and design before solution!
+
+## Alternatives Considered (Optional)
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative workflows or workarounds you are currently using.
+
+## Additional Context 
+
+Add any other context or screenshots about the feature request here.