chore: checkpoint before Python removal

vendor/unicode-ident/tests/fst/.gitignore

@@ -0,0 +1 @@
+/prop_list.rs

vendor/unicode-ident/tests/fst/mod.rs

@@ -0,0 +1,11 @@
+#![allow(clippy::module_name_repetitions)]
+
+pub fn xid_start_fst() -> fst::Set<&'static [u8]> {
+    let data = include_bytes!("xid_start.fst");
+    fst::Set::from(fst::raw::Fst::new(data.as_slice()).unwrap())
+}
+
+pub fn xid_continue_fst() -> fst::Set<&'static [u8]> {
+    let data = include_bytes!("xid_continue.fst");
+    fst::Set::from(fst::raw::Fst::new(data.as_slice()).unwrap())
+}