Use webpack for bundling JS libs and move Golang code related to Iframe generation there

main.go

-package main
+package jslibs
 
 import (
 	"fmt"
@@ -7,12 +7,6 @@ import (
 	"strings"
 )
 
-func main() {
-	result := GetClientJsLibrary("https://test.org")
-	fmt.Println("Hello, world.")
-	fmt.Println(result)
-}
-
 func GetClientJsLibrary(iframeUrl string) string {
 	path, err := filepath.Abs("../vcl/javascript/dist/viamapi-client.js")