Add issue and PR templates

Author: steinybot

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: \U0001F41B Bug Report
+about: Something isn't working as expected \U0001F914.
+title: What is the impact?
+labels: bug, triage
+assignees:
+---
+
+<!-- Thank you for taking the time to create this bug report. -->
+<!-- Please provide as much information as you can. -->
+
+**Description**
+
+Version: 
+
+<!-- A clear and concise description of what the bug is. -->
+<!-- Explain the impact that this bug has on you. -->
+<!-- Is this preventing you from achieving your goal? -->
+
+**Step To Reproduce**
+
+<!-- Provide a link to a repository if possible. -->
+
+1. 
+1. 
+1. 
+
+**Expected Behaviour**
+
+<!-- What did you expect to happen? -->
+
+**Actual Behaviour**
+
+<!-- What actually happened? -->
+
+**Additional Information**
+
+<!-- Is there anything else that you tried? -->
+<!-- Have you found a workaround? -->
+<!-- Do you know of any links to other issues that may be relevant? -->

.github/ISSUE_TEMPLATE/enhancement_idea.md

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+---
+name: \U0001F680 Enhancement Idea
+about: I have an idea \U0001F4AD.
+title: What does this enable?
+labels: enhancement, triage
+assignees:
+---
+
+<!-- Thank you for taking the time to share your idea. -->
+<!-- Please provide as much information as you can. -->
+
+**Description**
+
+<!-- What is your idea? -->
+<!-- If this was implemented what would it enable? -->
+
+**Potential Solution**
+
+<!-- Do you know how you would implement this? -->
+
+**Additional Information**
+
+<!-- Is there precedence elsewhere for this idea? -->
+<!-- Are there other ideas that are related or alternatives to this one? -->

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

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+<!-- Wow! Thank you so much for your contribution, much appreciated. -->
+
+**Description**
+
+Closes: <!-- Enter the issue number. E.g. #123 -->
+
+<!-- How do these changes fix the bug / implement the enhancement? -->
+<!-- Are there any breaking changes? -->
+
+**Checklist**
+
+- [ ] Run `sbt devCheck`?
+- [ ] Added tests?
+- [ ] Updated the docs?