fix: state standalone versions from their code

Each standalone profile records where its version is read: the source
at its pin (clk 2026-07-23-136-g9020107, shadps4 0.20.1 WIP, eden
v0.2.0-401-g26a03d2), the APK, binary or archive read (kind package),
or, where no reading can be made, kind unverified with the reason: a
host the tools cannot read, a forge gone or not answering, no build
recorded as read, a pin on another branch. Those keep their value,
unconfirmed.

emulators/devilutionx.yml

@@ -6,6 +6,10 @@ upstream: ~
 profiled_date: "2026-10-04"
 source_commit: "9d4871587e1a8d9606f97a43d85e939b82f77900"
 core_version: "1.6.0-dev"
+version_basis:
+  kind: file
+  path: "VERSION"
+  pattern: '^(\S+)$'
 display_name: "Diablo (DevilutionX)"
 cores: [devilutionx]
 systems: [diablo]