Update the issue templates

.github/ISSUE_TEMPLATE/bug_report.yml

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+# Issue template inspired by NumPy's excellent template:
+# https://github.com/numpy/numpy/edit/main/.github/ISSUE_TEMPLATE/bug-report.yml
+name: Bug report
+description: Create a bug report to help us reproduce and correct it.
+title: "<Please write a descriptive title>"
+labels: [00 - Bug]
+
+body:
+- type: markdown
+  attributes:
+    value: >
+      Thank you for taking the time to file a bug report. Before creating a new
+      issue, please make sure to take a few minutes to check the issue tracker
+      for open and closed issues that may be related to your bug.
+
+- type: textarea
+  attributes:
+    label: "Describe the issue as clearly as possible:"
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: "Steps/code to reproduce the bug:"
+    description: >
+      A short code example that reproduces the problem/missing feature. It
+      should be self-contained, i.e., can be copy-pasted into the Python
+      interpreter or run as-is via `python myproblem.py`.
+    placeholder: |
+      import blackjax
+      << your code here >>
+    render: python
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: "Expected result:"
+    description: >
+      Please describe what you expect the above example to output.
+    placeholder: |
+      << the expected result here >>
+    render: shell
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: "Error message:"
+    description: >
+      Please include the full error message, if any.
+    placeholder: |
+      << Full traceback starting from `Traceback: ...` >>
+    render: shell
+
+- type: textarea
+  attributes:
+    label: "Blackjax/JAX/jaxlib/Python version information:"
+    description: Please run the following code and paste the output here.
+    placeholder: |
+        import blackjax; print("BlackJAX", blackjax.__version__)
+        import sys; print("Python", sys.version)
+        import jax; print("Jax", jax.__version__)
+        import jaxlib; print("Jaxlib", jaxlib.__version__)
+    render: python
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: "Context for the issue:"
+    description: |
+      Please explain how this issue affects your work or why it should be prioritized.
+    placeholder: |
+      << your explanation here >>
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: Question/Help/Support
+    url: https://github.com/blackjax-devs/blackjax/discussions/new
+    about: "If you have a question about how to use Blackjax, please start a discussion."