Improve live audio generation logic

Change to mix audio files directly when the same character is assigned to all positions to avoid volume mismatch
Change metadata display when the same character is assigned to all positions
Fix bug in Live 1151 that caused an error if useCheersInst in config_user was set to true

Author: daydreamer-json

package.json

@@ -1,6 +1,6 @@
 {
   "name": "uma-db-stuff",
-  "version": "0.2.2",
+  "version": "0.3.0",
   "description": "A set of experimental scripts to process Umamusume Pretty Derby game assets and database files",
   "author": "daydreamer-json <[email protected]> (https://github.com/daydreamer-json)",
   "license": "AGPL-3.0-or-later",