Only one issue template

Author: pthom

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,55 @@
+---
+name: Issue
+about: Report an issue
+title: ""
+labels:
+assignees: ''
+
+---
+<!--
+INSTRUCTIONS
+============
+
+Please read these instructions before submitting your issue.
+
+If this is the first time you interact on this project, welcome to the community!
+In this case, please give a bit of information on how you are using litgen (which project, how long you have been using it, etc.).
+
+Please check existing [open issues](../issues) and [discussions](../discussions) for similar reports before submitting a new one.
+
+
+Describe the issue
+------------------
+Include here a clear and concise description of what the issue is. Include logs or code snippets if necessary.
+
+
+Version & Platform
+------------------
+Mention
+- the version of litgen you are using (e.g., a version number or commit hash and/or date)
+- the type of bindings you are using: nanobind or pybind11
+
+Minimal reproducible example
+----------------------------
+Please, please do try to provide a minimal reproducible example that reproduces the issue.
+
+For example, you can use the following code block:
+
+```python
+import litgen
+
+code = """
+    void foo(); // include your own C++ code here (make it short)
+"""
+
+options = litgen.LitgenOptions()
+# Customize options if needed
+
+generated_code = litgen.generate_code(options, code)
+
+print(generated_code.pydef_code)  # or generated_code.stub_code
+```
+
+Explain how the generated code should look, and how it actually looks.
+
+-->