Make WriteManifest publish to the src/main/resources folder instead of build folder, and add to eclipse sync tasks

Author: LexManos

src/main/groovy/net/minecraftforge/forgedev/legacy/SharedBuildPlugin.java

@@ -69,6 +69,7 @@ public void apply(Project project) {
             var eclipse = project.getExtensions().getByType(EclipseModel.class);
 
             eclipse.synchronizationTasks(
+                processResources,
                 tasks.named("eclipseClasspath", GenerateEclipseClasspath.class),
                 tasks.named("eclipseProject", GenerateEclipseProject.class)
             );

src/main/groovy/net/minecraftforge/forgedev/legacy/tasks/WriteManifest.groovy

@@ -28,13 +28,6 @@ abstract class WriteManifest extends DefaultTask {
         project.tasks.register('writeManifest', WriteManifest).tap { task ->
             project.tasks.named('processResources', ProcessResources) {
                 it.dependsOn(task)
-                it.from(task) { CopySpec copy ->
-                    // Take the output from this task and copy it into resources META-INF
-                    copy.into('META-INF')
-
-                    // Replace duplicate file if it exists
-                    copy.duplicatesStrategy = DuplicatesStrategy.INCLUDE
-                }
             }
 
             project.afterEvaluate {
@@ -56,7 +49,7 @@ abstract class WriteManifest extends DefaultTask {
     @Inject
     WriteManifest(ProjectLayout layout) {
         // The output name is ALWAYS "MANIFEST.MF", and output cannot be changed
-        this.output.value(layout.buildDirectory.file("${this.name}/MANIFEST.MF")).disallowChanges()
+        this.output.value(layout.projectDirectory.file("src/main/resources/META-INF/MANIFEST.MF")).disallowChanges()
     }
 
     @TaskAction