Fix neoforge mods.toml

Author: TBlueF

implementations/neoforge/build.gradle.kts

@@ -11,6 +11,7 @@ val supportedMinecraftVersions = listOf(
 
 val minecraftVersion = supportedMinecraftVersions.first()
 val neoVersion = "21.0.0-beta"
+val loaderVersion = "4"
 
 val shadowInclude: Configuration by configurations.creating
 configurations.api.get().extendsFrom(shadowInclude)
@@ -76,6 +77,7 @@ tasks.withType(ProcessResources::class).configureEach {
         "version" to project.version,
         "minecraft_version" to minecraftVersion,
         "neo_version" to neoVersion,
+        "loader_version" to loaderVersion,
     )
     inputs.properties(replacements)
     filesMatching(listOf(

implementations/neoforge/src/main/resources/META-INF/neoforge.mods.toml

@@ -1,3 +1,5 @@
+modLoader="javafml"
+loaderVersion="[${loader_version},)"
 license="MIT"
 
 [[mods]]