Python: Shorten tree-sitter-python directory name

The current name results in a path that is more than 260 characters long,
and this causes issues for the build on Windows.

python/extractor/tsg-python/tsp/.gitignore

@@ -0,0 +1,7 @@
+Cargo.lock
+package-lock.json
+node_modules
+build
+*.log
+/examples/*/
+/target/