Add Query Builder for RediSearch commands

[ofekshenawa]

A query API builder pattern for RediSearch commands in go-redis, providing a more intuitive and type safe way to construct complex search queries and operations.

Features Added

• SearchBuilder : FT.SEARCH queries
• AggregateBuilder: FT.AGGREGATE queries
• ExplainBuilder: Query explanation with FT.EXPLAIN
• SearchInfoBuilder: Index information retrieval
• SpellCheckBuilder: Spell checking functionality
• TagValsBuilder: Tag value enumeration
• SynUpdateBuilder: Synonym management
• CursorBuilder: Cursor-based result pagination
• DictBuilder: Dictionary management
• AliasBuilder: Index alias operations
• DropIndexBuilder: Index deletion with options

Implementation Details

• Builder pattern with method chaining
• Lazy evaluation: commands execute only when Run() is called
• Backward compatible: existing FT.* methods unchanged

[ndyakov]

Hey @ofekshenawa, thank you for this contribution. @htemelski-redis and I will review it soon.

[ndyakov]

I do think it will make more sense to have New*Builder constructors, to not to the user that the return value will be a builder that they can use to build the command. Where there are Actions, we can either have one method per action or an Action method to set it. Letting you decide. I am maybe leaning towards the methods per actions, whatever you decide let's keep it consistent across all builders.

[ndyakov]

added couple of comments suggestion. Let's mark this as experimental and let the community provide feedback on the builders

[ndyakov]

Lets ship it and see what the community have to say 🚀