Add comprehensive Sphinx documentation with MyST-Parser

.gitignore

@@ -10,3 +10,7 @@ __pycache__/
 vmlinux.py
 ~*
 vmlinux.h
+
+# Documentation build artifacts
+docs/_build/
+docs/_templates/

docs/Makefile

@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = .
+BUILDDIR      = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

docs/README.md

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+# PythonBPF Documentation
+
+This directory contains the Sphinx documentation for PythonBPF.
+
+## Building the Documentation
+
+### Prerequisites
+
+Install the documentation dependencies:
+
+**Using uv (recommended):**
+```bash
+uv pip install -r requirements.txt
+# Or install the optional docs dependencies
+uv pip install pythonbpf[docs]
+```
+
+**Using pip:**
+```bash
+pip install -r requirements.txt
+# Or install the optional docs dependencies
+pip install pythonbpf[docs]
+```
+
+### Build HTML Documentation
+
+```bash
+make html
+```
+
+The generated documentation will be in `_build/html/`. Open `_build/html/index.html` in a browser to view.
+
+### Other Build Formats
+
+```bash
+make latexpdf  # Build PDF documentation
+make epub      # Build ePub format
+make clean     # Clean build artifacts
+```
+
+## Documentation Structure
+
+- `index.md` - Main landing page
+- `getting-started/` - Installation and quick start guides
+- `user-guide/` - Comprehensive user documentation
+- `api/` - API reference documentation
+- `conf.py` - Sphinx configuration
+- `_static/` - Static files (images, CSS, etc.)
+
+## Writing Documentation
+
+Documentation is written in Markdown using [MyST-Parser](https://myst-parser.readthedocs.io/). See the existing files for examples.