Update issue templates

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,59 @@
+name: 🐛 File a bug report
+description: X's behavior is deviating from its documented behavior.
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please provide the following information.
+  - type: input
+    id: Polaris-version
+    attributes:
+      label: Polaris version
+      description: Value of ``polaris.__version__``
+      placeholder: 0.2.5, 0.3.0, 0.3.1, etc.
+    validations:
+      required: true
+  - type: input
+    id: Python-version
+    attributes:
+      label: Python Version
+      description: Version of Python interpreter
+      placeholder: 3.9, 3.10, 3.11, etc.
+    validations:
+      required: true
+  - type: input
+    id: OS
+    attributes:
+      label: Operating System
+      description: Operating System
+      placeholder: (Linux/Windows/Mac)
+    validations:
+      required: true
+  - type: input
+    id: installation
+    attributes:
+      label: Installation
+      description: How was Polaris installed?
+      placeholder: e.g., "using pip into virtual environment", or "using conda"
+    validations:
+      required: true
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: Explain why the current behavior is a problem, what the expected output/behaviour is, and why the expected output/behaviour is a better solution.
+    validations:
+      required: true
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: Steps to reproduce
+      description: Minimal, reproducible code sample, a copy-pastable example if possible.
+    validations:
+      required: true
+  - type: textarea
+    id: additional-output
+    attributes:
+      label: Additional output
+      description: If you think it might be relevant, please provide the output from ``pip freeze`` or ``conda env export`` depending on which was used to install Polaris.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: ❓ Discuss something on GitHub Discussions
+    url: https://github.com/polaris-hub/polaris/discussions
+    about: For questions like "How do I do X with Polaris?", you can move to GitHub Discussions.
+  - name: ❓ Discuss something on Discord
+    url: https://discord.gg/vBFd8p6H7u
+    about: For more interactive discussions, you can join our Discord server.

.github/ISSUE_TEMPLATE/default-template.md

@@ -1,6 +1,6 @@
 ---
 name: Default Template
-about: Default issue template
+about: Default, generic issue template
 title: ''
 labels: ''
 assignees: ''
@@ -20,4 +20,4 @@ _Describe the expected work that will be needed to address the issue, leading in
 
 # Links
 
-- [Link to other issues/PRs/external tasks](www.example.com)
+- [Link to other issues/PRs/external tasks](www.example.com)

.github/ISSUE_TEMPLATE/feature-request.md

@@ -0,0 +1,19 @@
+---
+name: Feature request
+about: Suggest an idea for a new Polaris feature
+title: ''
+labels: feature
+assignees: ''
+---
+
+# 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.