Import node handling for package imports whose package name is different than the folder name

[pandurangpatil]

    val cpg = code(
      """
        |module joern.io/sample
        |go 1.18
        |""".stripMargin,
      "go.mod"
    ).moreCode(
      """
        |package fpkg
        |type Sample struct {
        |  Name string
        |}
        |func Woo(a int) int{
        |   return 0
        |}
        |""".stripMargin,
      Seq("lib", "lib.go").mkString(File.separator)
    ).moreCode(
      """
        |package main
        |import "joern.io/sample/lib"
        |func main() {
        |  var a = fpkg.Woo(10)
        |  var b = fpkg.Sample{name: "Pandurang"}
        |  var c = b.Name
        |  var d fpkg.Sample
        |}
        |""".stripMargin,
      "main.go"
    )

In the above example, when IMPORT node gets created while processing main.go, its alias has been set to lib instead of fpkg