feat: cross app secret referencing

[nimish-ks]

Added support for secret referencing across applications.

@rohan-chaturvedi you may use the following script to access secrets:

package main

import (
	"fmt"
	"log"

	"github.com/phasehq/golang-sdk/phase"
)

func main() {
	// Initialize the Phase client
	serviceToken := "pss_service:v2:..."
	host := "https://console.phase.dev"
	debug := true

	phaseClient := phase.Init(serviceToken, host, debug)
	if phaseClient == nil {
		log.Fatal("Failed to initialize Phase client")
	}

	// Define options for fetching secrets
	getOpts := phase.GetAllSecretsOptions{
		EnvName:    "Development",
		SecretPath: "/",
		AppID:      "443b1987-caaf-4b68-ab47-7cd49ef4ed74",
	}

	// Fetch secrets
	secrets, err := phaseClient.GetAll(getOpts)
	if err != nil {
		log.Fatalf("Failed to get secrets: %v", err)
	}

	// Print secrets in a readable format
	fmt.Println("Secrets:")
	for key, value := range secrets {
		fmt.Printf("%s: %s\n", key, value)
	}
}

• Set the PHASE_SERVICE_TOKEN
• Replace the app_id

[rohan-chaturvedi]

LGTM