cargo tarball is not "verified": we build the TreeSitter grammar outside of `OUT_DIR`
Error report:
error: failed to verify package tarball
Caused by:
Source directory was modified by build.rs during cargo publish. Build scripts should not modify anything outside of OUT_DIR.
Added: /Users/thomas/Downloads/turtlefmt/target/package/turtlefmt-0.1.0/tree-sitter/src
/Users/thomas/Downloads/turtlefmt/target/package/turtlefmt-0.1.0/tree-sitter/src/grammar.json
/Users/thomas/Downloads/turtlefmt/target/package/turtlefmt-0.1.0/tree-sitter/src/node-types.json
/Users/thomas/Downloads/turtlefmt/target/package/turtlefmt-0.1.0/tree-sitter/src/parser.c
/Users/thomas/Downloads/turtlefmt/target/package/turtlefmt-0.1.0/tree-sitter/src/tree_sitter
/Users/thomas/Downloads/turtlefmt/target/package/turtlefmt-0.1.0/tree-sitter/src/tree_sitter/parser.h