feat(rust): difflib port + taxonomy data dump

- src/difflib.rs: faithful port of CPython difflib.SequenceMatcher
  (Ratcliff/Obershelp ratio incl. real_quick_ratio/quick_ratio and autojunk),
  validated against python-computed test vectors with exact float equality
- data/warhammer_data.json: taxonomy tables dumped from the python module
  (tools/dump_warhammer_data.py), parsed order-preserving in
  src/warhammer_data.rs (python dict insert-order + last-value-wins semantics)
- deps for the module ports: clap, reqwest, url, base64, regex, sha2, hex,
  sevenz-rust2, unrar, zip, indexmap, rand, rpassword

version-rust/src/main.rs

@@ -1,7 +1,17 @@
+mod catalogue;
+mod difflib;
+mod discord;
+mod extract;
 mod globalstore;
+mod gofile;
+mod gwshop;
 mod manifest;
+mod orchestrate;
+mod sorter;
 mod state;
 mod util;
+mod warhammer_data;
+mod zero807;
 
 fn main() {
     env_logger::init();