fix cluster extractFirstKey skip commandOptions() passed to args

[carlhopf]

Description

in cluster mode the node/slot is calculated based on extractFirstKey. skip commandOptions if passed as first argument

f.ex.

cluster.xRead(commandOptions({ isolated: true }), [{ key: 'foo', id: '0-0' }], { BLOCK: 1000 });

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Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[leibale]

@carlhopf thanks for contributing! Can you please add a test?
edit: on top of that, we're thinking of changing the way the command options are passed to a command to improve performance and readability. Since you are using this API, if you have some suggestions/ideas that will be very helpful :)
this is what we have in mind right now:

client.withOptions(...).ping();

[carlhopf]

@leibale

added/updated the unit test: should assert cluster commands with commandOptions go to the correct hash slot without MOVED/ASK

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the suggested chaining client.withOptions(...).ping(); looks like a great improvement to me 👍

[leibale]

@carlhopf Sorry for the long delay... wanna review my changes? 🙏

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01 ⚠️

Comparison is base (d65a641) 95.63% compared to head (db46727) 95.62%.

❗ Current head db46727 differs from pull request most recent head 17f59a1. Consider uploading reports for the commit 17f59a1 to get more accurate results

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2439      +/-   ##
==========================================
- Coverage   95.63%   95.62%   -0.01%     
==========================================
  Files         455      455              
  Lines        4579     4548      -31     
  Branches      528      520       -8     
==========================================
- Hits         4379     4349      -30     
+ Misses        129      128       -1     
  Partials       71       71              

Impacted Files	Coverage Δ
packages/client/lib/client/pub-sub.ts	79.85% <ø> (ø)
packages/client/lib/commander.ts	95.45% <ø> (ø)
packages/client/lib/cluster/index.ts	81.90% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[carlhopf]

@leibale thanks for the review! good changes 👍🙏