Fix missing files in wheel when building in windows.

It seems setuptools would miss .cpp and .cu in windows platform, so add them as
package data in pyproject.toml.

PR tracking at: USTC-KnowledgeComputingLab/qmb#18

Author: hzhangxyz

pyproject.toml

@@ -59,6 +59,9 @@ qmb = "qmb.__main__:main"
 [tool.setuptools.packages.find]
 include = ["qmb"]
 
+[tool.setuptools.package-data]
+qmb = ["*.cpp", "*.cu"]
+
 [tool.setuptools_scm]
 version_file = "qmb/_version.py"
 version_scheme = "no-guess-dev"