Implement the SSCAN command

[kelvinmwinuka]

Scan the elements of a set.
Reference: https://redis.io/docs/latest/commands/sscan/

Client-Server Spec:

Command File: ./internal/modules/set/commands.go
Test File: ./internal/modules/set/commands_test.go

Command: sscan
Module: constants.SetModule
Categories: contants.SetCategory, constants.ReadCategory, constants.SlowCategory
Description: (SSCAN key cursor [MATCH pattern] [COUNT count]) scan the elements of a set
Sync: false

Embedded Spec:

Command File: ./echovault/api_set.go
Test File: ./echovault/api_set_test.go

Documentation

Add documentation to ./docs/docs/commands/set/sscan.mdx

[NicoleStrel]

will do this one ^^