Add comprehensive documentation to set commands

[iamamirsalehi]

Add comprehensive documentation to set commands

Summary

This PR adds detailed documentation to all set command methods in set_commands.go to improve developer experience and code discoverability.

Changes

• Added interface documentation for SetCmdable explaining its purpose
• Added comprehensive documentation to all 20 set command methods:
  • SAdd - Add members to a set
  • SCard - Get set cardinality
  • SDiff - Set difference operation
  • SDiffStore - Store set difference result
  • SInter - Set intersection operation
  • SInterCard - Get intersection cardinality
  • SInterStore - Store set intersection result
  • SIsMember - Check membership
  • SMIsMember - Check multiple memberships
  • SMembers - Get all members (slice)
  • SMembersMap - Get all members (map)
  • SMove - Move member between sets
  • SPop - Pop random member
  • SPopN - Pop multiple random members
  • SRandMember - Get random member
  • SRandMemberN - Get multiple random members
  • SRem - Remove members
  • SScan - Incrementally scan set
  • SUnion - Set union operation
  • SUnionStore - Store set union result

Documentation Details

Each method now includes:

• The corresponding Redis command syntax
• Clear description of what the command does
• Parameter explanations (especially for SScan)
• Return value descriptions
• Edge case behavior (e.g., handling of non-existent keys)

Benefits

• Improved IDE autocomplete experience with inline documentation
• Better understanding of method behavior without consulting external docs
• Clearer parameter usage, especially for complex operations like SScan
• Consistent documentation style matching other command files in the codebase

Testing

• No functional changes - documentation only

[jit-ci]

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[ndyakov]

Hello @iamamirsalehi, thank you for this contribution. I will review it as soon as possible.

[iamamirsalehi]

Hello @ndyakov, Thank you for reviewing. I’ll add more documentation for the other methods if you find it useful.

[ndyakov]

@iamamirsalehi thank you for this initiative once again!
One comment that should be addressed:

In the comments for a given command, it will be useful if we provide link to the official documentation on redis.io. You can take a look at:

go-redis/search_commands.go

Line 594 in f711eb0

// [FT._LIST]: (https://redis.io/commands/ft._list/)

and read about links in godoc:
https://go.dev/doc/comment#links

Consider this a pr wide comment, we can add such links to all comments.

[iamamirsalehi]

@ndyakov Thank you for reviewing. Sure, I'll apply it to all comments