!1 fix issue:src-openEuler/python-libcst目录为空，需要引入该包

From: @zhangchao13 
Reviewed-by: @desert-sailor 
Signed-off-by: @desert-sailor

python-libcst.spec

@@ -0,0 +1,96 @@
+%bcond_with docs
+%bcond_with tests
+ 
+%global pypi_name libcst
+ 
+%global common_description %{expand:
+LibCST parses Python source code as a CST tree that keeps all formatting
+details (comments, whitespaces, parentheses, etc). It's useful for building
+automated refactoring (codemod) applications and linters.
+ 
+LibCST creates a compromise between an Abstract Syntax Tree (AST) and a
+traditional Concrete Syntax Tree (CST). By carefully reorganizing and naming
+node types and fields, it creates a lossless CST that looks and feels like an
+AST.}
+ 
+Name:           python-%{pypi_name}
+Version:        0.3.21
+Release:        1
+Summary:        A concrete syntax tree with AST-like properties for Python 3
+License:        MIT and (MIT and Python) and ASL 2.0
+URL:            https://github.com/Instagram/LibCST
+Source0:        %{pypi_source %{pypi_name}}
+BuildArch:      noarch
+ 
+BuildRequires:  python3-devel
+BuildRequires:  python3dist(setuptools)
+BuildRequires:  python3dist(setuptools-scm)
+%if %{with tests}
+BuildRequires:  python3dist(pytest)
+BuildRequires:  python3dist(pyyaml) >= 5.2
+BuildRequires:  python3dist(hypothesis)
+BuildRequires:  python3dist(hypothesmith)
+%endif
+BuildRequires:  python3dist(typing-inspect) >= 0.4
+%if %{with docs}
+BuildRequires:  graphviz
+BuildRequires:  sed
+BuildRequires:  python3-docs
+BuildRequires:  python3-metakernel-python
+BuildRequires:  python3dist(sphinx)
+BuildRequires:  python3dist(nbsphinx) >= 0.4.2
+BuildRequires:  python3dist(sphinx-rtd-theme) >= 0.4.3
+%endif
+ 
+%description
+%{common_description}
+ 
+%package -n     python3-%{pypi_name}
+Summary:        %{summary}
+ 
+%description -n python3-%{pypi_name}
+%{common_description}
+ 
+%if %{with docs}
+%package        doc
+Summary:        %{name} documentation
+Requires:       python3-docs
+ 
+%description    doc
+Documentation for %{name}
+%endif
+ 
+%prep
+%autosetup -n %{pypi_name}-%{version}
+
+%if %{with docs}
+sed -r \
+    -e 's|https://docs.python.org/3|%{_docdir}/python3-docs/html|' \
+    -i docs/source/conf.py
+%endif
+ 
+%build
+%py3_build
+%if %{with docs}
+PYTHONPATH=${PWD} sphinx-build-3 docs/source html
+rm -rf html/.{doctrees,buildinfo}
+%endif
+ 
+%install
+%py3_install
+ 
+%files -n python3-%{pypi_name}
+%license LICENSE
+%doc README.rst
+%{python3_sitelib}/%{pypi_name}
+%{python3_sitelib}/%{pypi_name}-%{version}-py%{python3_version}.egg-info
+ 
+%if %{with docs}
+%files doc
+%doc html
+%license LICENSE
+%endif
+ 
+%changelog
+* Tue Jun 6 2023 chaozhangm <chaozhangm@isoftstone.com> - 0.3.21-1
+- Initial package.