exclude automation scripts from source distribution

pyproject.toml

@@ -23,3 +23,4 @@ linux-static-libraries = ["build/fbxsdk/lib/all/x64/release/libfbxsdk.a"]
 win-libraries = ["libfbxsdk-md", "zlib-md", "libxml2-md", "Advapi32", "Wininet"]
 win-py36-libraries = ["libfbxsdk-mt", "zlib-mt", "libxml2-mt", "Advapi32", "Wininet"]
 builder-factory = "builder.py"
+sdist-excludes = ["Dockerfile", "buildall.sh", "build_wheels.sh", "build_wheels.bat"]