Ship the real club crests in the APK, and fix the CI licence step

Resolving crests from Wikipedia at runtime never produced a visible badge
on the TV and left nothing in the log to debug, so the shield fallback was
all anyone ever saw. They are now downloaded once at build time by
tools/fetch-crests.py into assets/crests (git-ignored, so no trademarked
artwork is committed) and loaded from there — instant, and independent of
the network.

CI: accepting SDK licences by piping "yes" into sdkmanager died of SIGPIPE
(exit 141) under pipefail; the licence hashes are written directly now.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -5,3 +5,4 @@ local.properties
 *.iml
 .kotlin/
 tests/runs/
+app/src/main/assets/crests/