feat: add support for customizable annotations for Redis and Sentinel…

[hanbing204]

Description

add support for customizable annotations for Redis and Sentinel pods

• Introduced new Helm chart template parameters to allow custom annotations
  to be added to Redis and Sentinel pods.
• This enhancement enables more flexible deployment configurations and
  can help with integrations requiring specific pod-level metadata.

Fixes #1588

Type of change

• New feature (non-breaking change which adds functionality)

Checklist

• Tests have been added/modified and all tests pass.
• Functionality/bugs have been confirmed to be unchanged or fixed.
• I have performed a self-review of my own code.
• Documentation has been updated or added where necessary.

Additional Context

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1593   +/-   ##
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  Coverage        ?   31.39%           
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  Files           ?       78           
  Lines           ?     5965           
  Branches        ?        0           
=======================================
  Hits            ?     1873           
  Misses          ?     3900           
  Partials        ?      192           

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