Plugin API: partially restore readScore, closeScore and writeScore

[XiaoMigros]

Resolves: #13593

Rebased #20822 after the changes to plugins/extensions. Would be nice to get this into MuseScore 4 still.

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[Eism]

Ahh, we have a problem with the dependency of the engraving module on the notation and project modules.

The easiest way to solve this problem:

• add an interface to the engraving module, it will have 3 methods - openScore, saveScore, closeScore
• inject the interface into PluginAPI, call from API methods
• implement the interface in the project module

[Jojo-Schmitz]

Please add a

Resloves: #13593

To the initial description, for it to be linked to that issue

[XiaoMigros]

Has been dealt with, sorry for the wait!

[wwwbagel3]

Hey guys - wondering if there's been any movement on this? I (and others) eagerly await for these to be added. Thanks!

[DmitryArefiev]

@XiaoMigros This is ready for code review/testing?

[cbjeukendrup]

Looks like it's awaiting a new review from @Eism (but perhaps a rebase first, by now)

[XiaoMigros]

@DmitryArefiev @Eism The PR is rebased, I've tested it on my Windows device and it seems to be working as expected so I think it's ready for your triage!

[brunoro]

Very excited for this! In my brass band we wrote a plugin to help us format our scores and this would help a lot to migrate our repertoire to MuseScore 4

[brunoro]

small update, I just tested this on Mac against commit e99e0e7 and it worked fine. I managed to export pdf, svg, mp3 and midi using the writeScore method.

@dmitrio95 @Eism is there anything I can do to help @XiaoMigros get this across the finish line?

[Auth-Xero]

Hey, is there any update/ETA on when this may be merged? Thank you!

[cbjeukendrup]

We plan to merge as many community PRs as possible before the end of this year. This one is relatively high on my list because it looks like it's in a good state and I know it's quite wanted.