Add a step to generate a MANIFEST.MF file recording merge sources

[shartte]

Generates a new step (generateSplitManifest) in the joined dist, whose output is a MANIFEST.MF file detailing which files are exclusive to client or server.

Example:

Manifest-Version: 1.0
NeoForm-Minecraft-Dists: server client

Name: assets/minecraft/models/item/hanging_roots.json
NeoForm-Minecraft-Dist: client

Name: net/minecraft/client/multiplayer/chat/report/ReportEnvironment.cla
 ss
NeoForm-Minecraft-Dist: client

[neoforged-pr-publishing]

• Publish PR to GitHub Packages

Last commit published: d78b46c229f15ce0060b9816809b2ed205acb704.

PR Publishing

The artifacts published by this PR:

• 📦 net.neoforged:neoform:1.21.4-20241214.022716

Repository Declaration

In order to use the artifacts published by the PR, add the following repository to your buildscript:

repositories {
    maven {
        name 'Maven for PR #15' // https://github.com/neoforged/NeoForm/pull/15
        url 'https://prmaven.neoforged.net/NeoForm/pr15'
        content {
            includeModule('net.neoforged', 'neoform')
        }
    }
}

[shartte]

Makes use of neoforged/InstallerTools#14

[shartte]

Will be replaced by directly generating the Manifest in NFRT and NeoGradle