Copy over changelog publishing code from Neoforge

[ApexModder]

This PR simply copies over the changelog publishing code from Neoforge, which generates and includes the changelog file with maven publications.

Closes #105

[neoforged-pr-publishing[bot]]

• [x] Publish PR to GitHub Packages

Last commit published: f68c004d12cd1e5ea5d691f81f86267469f9e0f1.

PR Publishing

### The artifacts published by this PR: - :package: [`net.neoforged:moddev-gradle:2.0.8-beta-pr-125-pr-add-changelog`](https://github.com/neoforged/ModDevGradle/packages/2225573) - :package: [`net.neoforged.moddev.repositories:net.neoforged.moddev.repositories.gradle.plugin:2.0.8-beta-pr-125-pr-add-changelog`](https://github.com/neoforged/ModDevGradle/packages/2225575) - :package: [`net.neoforged.moddev:net.neoforged.moddev.gradle.plugin:2.0.8-beta-pr-125-pr-add-changelog`](https://github.com/neoforged/ModDevGradle/packages/2225574) ### Repository Declaration In order to use the artifacts published by the PR, add the following repository to your buildscript: ```gradle repositories { maven { name 'Maven for PR #125' // https://github.com/neoforged/ModDevGradle/pull/125 url 'https://prmaven.neoforged.net/ModDevGradle/pr125' content { includeModule('net.neoforged', 'moddev-gradle') includeModule('net.neoforged.moddev.repositories', 'net.neoforged.moddev.repositories.gradle.plugin') includeModule('net.neoforged.moddev', 'net.neoforged.moddev.gradle.plugin') } } } ```

[neoforged-releases[bot]]

🚀 This PR has been released as ModDevGradle version 2.0.6-beta.