feat: Add issue templates (#68)

* feat: Add issue templates

These are the suggested templates from GitHub.

* feat: Auto-format templates

* docs: Set default issue template title and labels

* docs: Remove irrelevant sections

* docs: Use placeholders for text to be removed

* docs: Add section for actual behaviour

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,35 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: 'Bug: '
+labels: 'bug'
+assignees: ''
+---
+
+[Please remove this and other [placeholder text] before submitting.]
+
+**Describe the bug**
+[A clear and concise description of what the bug is.]
+
+**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.]
+
+**Actual behavior**
+[Describe what actually happened.]
+
+[If applicable, add logs to help explain your problem:]
+
+```console
+[Paste logs here]
+```
+
+**Additional context**
+[Add any other context about the problem here.]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,21 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: 'Feature request: '
+labels: 'enhancement'
+assignees: ''
+---
+
+[Please remove this and other [placeholder text]] before submitting.
+
+**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.]