Add Pakku version 0.8.2

[juraj-hrivnak]

In this PR I added a bucket for Pakku, a multiplatform modpack manager for Minecraft: Java Edition.

• [x] I have read the Contributing Guide.

[github-actions[bot]]

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pakku

• [x] Description
• [x] License
• [ ] Hashes
• [x] Checkver
• [x] Autoupdate

[juraj-hrivnak]

/verify

[github-actions[bot]]

All changes look good.

Wait for review from human collaborators.

pakku

• [x] Description
• [x] License
• [x] Hashes
• [x] Checkver
• [x] Autoupdate