passes: rename mixin classes + patch mixins.json/refmap like OBF

- Remove absorb_mixins keep rule (mixin classes now renameable)
- Add mixins.rs: patch_mixins_json rewrites package + entries via
  common prefix of mapped names; patch_refmap_json rewrites all strings
- Resources pass routes *.mixins.json and *refmap.json to specialized
  patchers, falls back to generic text remap

Reference: OBF fabric-obfuscator patchMixinsJson/patchRefmapJson.

crates/noxis-analysis/src/keep/mod.rs

@@ -8,8 +8,11 @@ use regex::Regex;
 use crate::entrypoints::Entrypoints;
 use noxis_core::Config;
 
+mod dispatch;
 mod scans;
 
+pub use dispatch::external_dispatch_families;
+
 /// Compiled glob: `*` - anything but `/`, `**` - anything, `?` - one char.
 fn compile(pattern: &str) -> Result<Regex, regex::Error> {
     let mut out = String::from("^");
@@ -165,7 +168,6 @@ impl Analysis {
         keep.absorb(&entrypoints);
         keep.absorb_bootstrap(program);
         keep.absorb_databind(program);
-        keep.absorb_mixins(program);
 
         let locked_classes = program
             .classes