move TimedTextEditor, TranscriptEditor and adapters util to packages

[pietrop]

Is your Pull Request request related to another issue in this repository ?

A spike on branch monorepo-refactor

Describe what the PR does

• move TimedTextEditor and TranscriptEditor to packages
• as well as adapters dependencies from Util

State whether the PR is ready for review or whether it needs extra work
still working on it

Additional context
🚀

[pietrop]

Got the storybook working! based on @chrishutchinson PR #122

There's still stuff to do, but as short lived spike, I think it be good to review it and merge it to the mono repo branch, before doing another spike with some more tweaks.

so far done

• Moved everything in src/lib into packages
• config lerna so that it can pick up nested folder structure inside of packages
• demo page - The advantage of keeping. refactoring demo page, is that you can also have a direct link to full screen version, eg publishing in github pages http://localhost:6006/iframe.html?id=demo--default

Still to do, for another spike, PR

• folder structure for packages folder - see this example
• re-think the naming of the modules, eg is this a good naming convention @bbc/react-transcript-editor-timecode-converter as a workaround to the name spacing? or is it not very good? do we even need to name space them? we could just decide which once are public eg they are reusable by themselves, so they are published to npm , and in which case what is a sensible standalone name, and which once are private, meaning used only within the component) - this could be in more then one pass.
• figure out how to publish to npm only certain packages with lerna.
• figure out how to publish storybook to github pages
• add storybook plugins

[pietrop]

some quick lerna tips, that we should add to docs notes

use npx to call local version of lerna, as it's installed as dev dependency

npx lerna clean

will ask for confirmation, and removes all the symlink and node_modules that are connecting the various packages in the mono repo.

npx lerna ls

lists all the modules it recognises in packages folder and other folders specified in lerna.json config. useful to see if it is picking up everything you expect.

npx lerna bootstrap

links all the packages together as needed.

if that works, you should then be ready to do

npm run storybook 

should take you to http://localhost:6006 where you should see the storybook. unless any errors are flagged in the terminal.