feat: read Batocera launchers from configgen

The scraper parses the configgen generators with ast at the pinned tag: DuckStation and its legacy build, Hatari, xemu, melonDS, mupen64plus 64DD, x16emu, GSplus, and the o2em and neocd core options. An extractor that no longer recognises its code raises instead of writing an empty list.

scripts/scraper/batocera_scraper.py

@@ -26,6 +26,7 @@ from .base_scraper import (
     github_headers,
     requirement_entry,
 )
+from .batocera_launchers import extract_launchers
 
 PLATFORM_NAME = "batocera"
 
@@ -483,6 +484,9 @@ class Scraper(BaseScraper):
         if dual:
             # Launched both ways: each layout gets its files.
             result["dual_mode_cores"] = dual
+        result["launchers"] = extract_launchers(
+            lambda path: self._fetch_text(f"{_RAW_BASE}/{self.tag}/{path}")
+        )
         return result