Convert note scripts to libraries

[bobbinth]

Currently, we write note script MASM files as programs (i.e., with begin ... end block). This makes it difficult to get access to note script roots programmatically (see #2335 (comment) for more context). To fix this, we can convert note scripts to libraries. For example, BURN note script, instead of the current

use miden::standards::notes::burn

begin
    exec.burn::main
end

Could be defined as:

pub use miden::standards::notes::burn::main

To make this work, we'll need to add an annotation to the miden::standards::notes::burn::main. This would look something like:

@note_script
pub proc main
    ...
end

Then, in the NoteScript: constructor, we'd take Library rather than Program as a parameter, and then would look for the procedure with @note_script attribute.

[Farukest]

Hi @bobbinth I can handle it :)

[bobbinth]

@Farukest - thank you! It is all yours.