feat: Implement installations

[arse09]

Big PR baby

Summary

• New lib/helpers.ts.
• Save installations to disk.
• Load installations from disk.
• Duplicate installations.
• Edit & save installations.
• "Latest release" & "Latest snapshot" installations.
• Allow users to choose their own path for installations.

Folder structure

.pomme/
├── assets/
│   ├── indexes/                        # indexes_dir
│   └── objects/                        # objects_dir
├── pomme-assets/                        # pomc_assets_dir
├── versions/
│   └── 26.1/
│       ├── 26.1.jar
│       ├── 26.1.json
│       └── extracted/
│           └── assets/                 # jar_assets_dir
│               └── minecraft/
│                   ├── blockstates/
│                   ├── models/
│                   └── textures/
│
├── installations.json
└── installations/
    ├── default
    └── <installation>/

<installation>/                         # game_dir
    ├── saves/
    ├── mods/
    ├── resourcepacks/
    ├── shaderpacks/
    ├── screenshots/
    ├── logs/
    ├── options.json
    ├── servers.json
    └── icon.png

[Purdze]

The setInstallations error is from #68 which merged to master after your branch was created. Please rebase onto master to resolve:

git fetch origin
git rebase origin/master

[Purdze]

Fix the empty if block on line 983, add ReservedName to the error mapper and wire up fslock for registry file ops

[Purdze]

rebase to fix label

[Purdze]

merging