Add IBMi support for Power-Access-Cloud

[vikasbolla]

• Added a Cloud init script, which creates a User Profile and handles configuration required for ssh-key based authentication.

[Prajyot-Parab]

/lgtm
/hold for @mkumatag

[mkumatag]

for the long run - introduce some filed like os

[mkumatag]

make use of text/template package like below(refer only template logic)

package main

import (
	_ "embed"
	"flag"
	"fmt"
	"os"
	"text/template"
)

//go:embed cloud-init-template.txt
var cloudInitTemplate string

// Config holds the template variables
type Config struct {
	Username string
	Keys     string
}

func main() {
	// Define command-line flags
	username := flag.String("username", "", "Username for the cloud-init configuration (required)")
	keys := flag.String("keys", "", "SSH public keys (required)")
	output := flag.String("output", "", "Output file path (optional, defaults to stdout)")
	flag.Parse()

	// Validate required parameters
	if *username == "" {
		fmt.Fprintln(os.Stderr, "Error: -username is required")
		flag.Usage()
		os.Exit(1)
	}

	if *keys == "" {
		fmt.Fprintln(os.Stderr, "Error: -keys is required")
		flag.Usage()
		os.Exit(1)
	}

	// Create config with provided values
	config := Config{
		Username: *username,
		Keys:     *keys,
	}

	// Parse the embedded template
	tmpl, err := template.New("cloud-init").Parse(cloudInitTemplate)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error parsing template: %v\n", err)
		os.Exit(1)
	}

	// Determine output destination
	var writer *os.File
	if *output != "" {
		writer, err = os.Create(*output)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Error creating output file: %v\n", err)
			os.Exit(1)
		}
		defer writer.Close()
	} else {
		writer = os.Stdout
	}

	// Execute template with config values
	err = tmpl.Execute(writer, config)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error executing template: %v\n", err)
		os.Exit(1)
	}

	// Print success message if writing to file
	if *output != "" {
		fmt.Fprintf(os.Stderr, "Cloud-init configuration successfully written to: %s\n", *output)
	}
}

// Made with Bob

[mkumatag]

no need to fallback, it will not fail..