feat: read script from sofie ExpectedPackages, and write script edits back to sofie PackageInfos SOFIE-2846

[Julusian]

About the Contributor

This pull request is posted on behalf of the NRK.

Type of Contribution

This is a: Feature

New Behavior

Script edits are now written back to Sofie as PackageInfos.

To achieve this, each Part needs to have a script Piece (with a stable id), that has an ExpectedPackage.
PackageInfos will be written back against that ExpectedPackage.
Blueprints are then able to watch for the PackageInfos to edit the script shown in the Sofie UI. This prompter editor will use the PackageInfos as the source of script whenever possible.

Note: If piece/package ids are not stable, that can cause issues with edits being lost or reverted unexpectedly.

Whenever the contentVersionHash of the ExpectedPackages change, any edits performed on that will be ignored (but the PackageInfos will not be deleted), in effect reverting back to the NRCS version of the script.

Testing Instructions

Other Information

Status

• PR is ready to be reviewed.
• The functionality has been tested by the author.
• Relevant unit tests has been added / updated.
• Relevant documentation (code comments, system documentation) has been added / updated.