docs: fix syntax highlighting (#228)

We're using
[`openqasm-pygments`](https://pypi.org/project/openqasm-pygments/) for
syntax highlighting `openqasm3` in our docs. As this package contains a
bug in lexing indented annotations, we're now using a custom version
until the upstream
[PR](openqasm/openqasm-pygments#12) is merged.

Author: ShortDevelopment

openqasm3_lexer/__init__.py

@@ -1,4 +1,5 @@
-from openqasm_pygments import OpenQASM2Lexer, OpenQASM3Lexer
+from openqasm_pygments.qasm2 import OpenQASM2Lexer
+from openqasm_pygments.qasm3 import OpenQASM3Lexer
 from sphinx.application import Sphinx
 from sphinx.highlighting import lexers
 

pyproject.toml

@@ -77,3 +77,6 @@ ignore_missing_imports = true
 
 [tool.pytest.ini_options]
 asyncio_default_fixture_loop_scope = "function"
+
+[tool.uv.sources]
+openqasm-pygments = { url = "https://github.com/LEQO-Framework/openqasm-pygments/releases/download/patch-annotation-lexing/openqasm_pygments-0.2.1a0-py3-none-any.whl" }