for example...

src/main/kotlin/main.kt

>

val src = Heirachy.Source().directory[0].direcctory[0].directory[0].file[0].sourceCode

val file = Heirachy.Source().directory[0].directory[0].directory[0].file[0].fileName
println("source code for $file is\n$src\n")

this looks just as file tree

i meant, for when the original source code is unavailable, for example, if the JAR or executable is copied to another machine

You don’t have access to Kotlin source code on runtime, if this is what you need

such that the generated Heirachy class (or whatever it provides) provided via such plugin will contain the complete directory and file structure of the directory including each file's contents

You can just generate code

i know

or just dump source tree to file and than pack it to program

but im asking if there are any libraries or plugins that ALREADY do this before i decide to implement it myself

It looks for me as very strange feature, so I very much doubt that something like this exist

;-;