pack ringbuf for importScripts (and get rid of mlworkerscripts.js)

[Francisco Bernardo]

mlworkerscripts was hacked into existence for PAdenot's class Ringbuffer to be loaded with importScripts into the WorkerGlobalSpace.

That forced other issues such as having a bunch of code all dynamically loaded with geval, including:

MLSABOutputTransducer
createOutputChannel
input
output
outputSABs
inputSABs

[Francisco Bernardo]

The resolution was to standardise RingBuffer across the solution, import it directly from ringbuf.js (it has named export for the class RingBuffer) an assign it to a variable in the WorkerGlobalScope.

This still supports dynamic code eval in the worker.