Journalling UUIDs

[irrenhaus3]

Implements a UUID utility class and uses it to provide the type of jo_id_t. The intent is to remove any realistic possibility of collision between JournallingObject IDs.
This addresses issue #4736 and supersedes PRs #2875 and #4723.

What's been tested to work so far?

• Saving and loading a new project file with automation.
• Saving and loading a new project file with a LFO Controller connection.

What doesn't work?

• RemotePlugin fixed with b1c205c
• Loading project files created with any previous version of LMMS (no update function for replacing int32-IDs with UUIDs).

TODOs?

• Remove workarounds from Fix lost control links in copied automation patterns #4723
• Test more thoroughly (ideally automated)
• Fix anything that doesn't work, obviously.

[LmmsBot]

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Linux

• Linux (AppImage): lmms-1.3.0-alpha.1.223+ga8d48366f-linux-x86_64.AppImage (build link)

Windows

• Windows 32-bit: lmms-1.3.0-alpha.1.223+ga8d48366f-mingw-win32.exe (build link)
• Windows 64-bit: lmms-1.3.0-alpha.1.223+ga8d48366f-mingw-win64.exe (build link)
• Windows 32-bit: lmms-1.3.0-alpha-msvc2017-win32.exe (build link)
• Windows 64-bit: lmms-1.3.0-alpha-msvc2017-win64.exe (build link)

macOS

• macOS : lmms-1.3.0-alpha.1.223+ga8d48366f-mac10.14.dmg (build link)

🤖

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[Rossmaxx]

I like the concept of removing possibilities of collision bw ids (though i don't understand anything about uuids). But since the plan is to get rid of qt, my question is - is it doable without using qt? If not qt, what's the way?

[allejok96]

Does this fix the bug of restoring ID of objects when undoing?

Steps to reproduce:

1. Create notes (you can undo each note)
2. Create a new clip on the same track (track is journalled as a whole)
3. Undo create clip (whole track is reloaded, clip gets new ID)
4. Unable to undo individual notes now (ID of clip does not match journal, so checkpoints are skipped)