Add new server configuration for Zombie Escape

[ataserinyel]

Adding my CS 1.6 Zombie Escape server

[github-actions]

Server list PR validation

Probed 1 new entry.

Gamedir	Address	Claimed	Responder	Host	Notes
cstrike	91.151.88.240:27015	49 (Xash)	49 (Xash)	Dark Professional | Zombie Escape Updated! | FreeVIP+BOSS+Event	✅ protocol match.

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_{Probes can be flaky on the first try; the nightly publish workflow re-probes with a 48 h grace window, so a single ❌ here is not necessarily fatal. Re-push to re-run.}