fix: state alias, test and game versions from code

An alias carries the version of the profile it aliases (version_basis
kind alias): mednafen_saturn and mednafen_vb read v1.32.1 and v1.31.0,
the mupen64plus_next builds 2.6.0, flycast_gles2 the flycast tag form.
The libretro-samples test cores without a pin take the commit their
profiled_date names and read library_version there.

emulators/00_example.yml

@@ -4,7 +4,11 @@ core_classification: pure_libretro
 source: "https://github.com/libretro/libretro-core-info"
 profiled_date: "2026-03-22"
 source_commit: "bd81a0b73b50449c0862b65bd755d87860925f65"
-core_version: ~
+core_version: "v1.22.2-3-gbd81a0b"
+version_basis:
+  kind: tag
+  tag: "v1.22.2"
+  distance: 3
 display_name: "Example Core (.info template)"
 cores:
   - 00_example