fix(fuzz): add fuzz_tls.mli and corpus dep to pass E705/E724 lint rules
- Add fuzz_tls.mli exporting suite : string * Crowbar.test_case list (E705)
- Bundle suite name into the suite value; update fuzz.ml accordingly
- Add (source_tree corpus) dep to fuzz alias rule (E724); corpus is
created on demand by gen_corpus.exe like all other fuzz targets