feat: add SCRIPT SHOW, CLIENT CAPA, and CLUSTER SLOT-STATS commands

[rueian]

This PR shows how to generate new Valkey commands and new command options by adding them into the commands.json and running go generate.

New commands:

• CLUSTER SLOT-STATS
• CLIENT CAPA
• SCRIPT SHOW

New command options:

• TIMEOUT -> CLUSTER SETSLOT
• NOSCORES -> ZSCAN

Example usage:

package main

import (
    "context"
    "fmt"
    "github.com/valkey-io/valkey-go"
)

func main() {
    client, err := valkey.NewClient(valkey.ClientOption{InitAddress: []string{"127.0.0.1:6379"}})
    if err != nil {
        panic(err)
    }
    defer client.Close()

    cmd := client.B().ClusterSlotStats().Slotsrange().StartSlot(0).EndSlot(1000).Build()
    fmt.Println(client.Do(context.Background(), cmd).ToAny())
}

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.66%. Comparing base (f41a9e9) to head (020b06e).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #13 +/- ## ========================================== + Coverage 89.62% 89.66% +0.03% ========================================== Files 87 87 Lines 36949 37051 +102 ========================================== + Hits 33117 33220 +103 + Misses 3648 3647 -1 Partials 184 184 ```

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[rueian]

Merged in v1.0.46.