Add publishAll task and update GitHub Actions workflow

Implemented a new Gradle task `publishAll` to publish for all available versions by iterating through the list of versions. Updated the GitHub Actions workflow to use this new task, ensuring that all versions are published in a single workflow run.

.github/workflows/publish.yml

@@ -26,7 +26,7 @@ jobs:
       run: chmod +x ./gradlew
 
     - name: Publish to GitHub Packages
-      run: ./gradlew publish
+      run: ./gradlew publishAll
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         GITHUB_ACTOR: ${{ github.actor }}

build.gradle.kts

@@ -43,6 +43,18 @@ project.gradle.extra.properties.forEach { prop ->
 
 writeBuildGradlePredefine(project.properties["availableVersions"] as List<String>, project.properties["versionIndex"] as Int)
 
+tasks.register("publishAll") {
+	val availableVersions = project.properties["availableVersions"] as List<String>
+
+	availableVersions.forEach { version ->
+		doLast {
+			exec {
+				commandLine = listOf("./gradlew", "-PminecraftVersion=${version}", "publish")
+			}
+		}
+	}
+}
+
 // gradle.properties
 val supportedModLoaders: String by project