add get all admins method to get all admin objects

src/main/java/dev/plex/module/PlexModuleFile.java

@@ -1,7 +1,10 @@
 package dev.plex.module;
 
+import com.google.common.collect.ImmutableList;
 import lombok.Data;
 
+import java.util.List;
+
 @Data
 public class PlexModuleFile
 {
@@ -9,4 +12,7 @@ public class PlexModuleFile
     private final String main;
     private final String description;
     private final String version;
+
+    //TODO: does not work
+    private List<String> libraries = ImmutableList.of();
 }