feat(client): add zRevRankWithScore command

[raashish1601]

Summary

Adds ZREVRANK_WITHSCORE / zRevRankWithScore for Redis 7.2's ZREVRANK key member WITHSCORE form.

This mirrors the existing ZRANK_WITHSCORE implementation and keeps zRevRank itself unchanged, so existing callers keep the current number | null return type while callers that need the score can opt into the new command.

Closes #2464.

Redis command reference: https://redis.io/docs/latest/commands/zrevrank/

Validation

• node -r ts-node/register/transpile-only direct parse/transform check for ZREVRANK_WITHSCORE
• npm run lint:changed
• npm run check:command-jsdoc
• npm run build
• git diff --cached --check

I also attempted a grep-limited Mocha run for ZREVRANK_WITHSCORE.spec.ts, but this repo starts its Docker-backed Redis test environment in the global hooks before the grep-selected test runs. It failed locally at spawn docker ENOENT because Docker is not installed in this environment.

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Note

Low Risk
Additive read-only command wrapper with no changes to existing APIs; risk is mainly using it against Redis versions before 7.2.

Overview
Adds client support for Redis 7.2 ZREVRANK … WITHSCORE, exposed as ZREVRANK_WITHSCORE / zRevRankWithScore, so callers can get a member’s reverse rank and score in one read without changing existing zRevRank (number | null).

The new command module follows the same pattern as ZRANK_WITHSCORE: it reuses ZREVRANK argument parsing and appends WITHSCORE, and maps replies to { rank, score } or null via ZRANK_WITHSCORE.transformReply. It is wired into the public commands export in index.ts, with tests for argument encoding and integration behavior (gated to Redis ≥ 7.2).

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[nkaradzhov]

Hi @raashish1601, thanks for the PR, i will look into it, hopefully soon!

[nkaradzhov]

clgtm