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/Cargo.toml

@@ -6,12 +6,25 @@ description = "Torrent-first platform for Warhammer proxy models: Discord channe
 
 [dependencies]
 anyhow = "1"
+base64 = "0.22"
 chrono = "0.4"
+clap = { version = "4", features = ["derive"] }
 dirs = "6"
 env_logger = "0.11"
+hex = "0.4"
+indexmap = { version = "2", features = ["serde"] }
 log = "0.4"
+rand = "0.9"
+regex = "1"
+reqwest = { version = "0.12", features = ["blocking", "gzip", "json"] }
+rpassword = "7"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
+sha2 = "0.10"
+sevenz-rust2 = "0.23"
+unrar = "0.5"
+url = "2"
+zip = "2"
 
 [dev-dependencies]
 tempfile = "3"