Added new permission system

By: Dinnerbone <dinnerbone@dinnerbone.com>

paper-api/src/main/java/org/bukkit/permissions/PermissionAttachmentInfo.java

@@ -0,0 +1,62 @@
+
+package org.bukkit.permissions;
+
+/**
+ * Holds information on a permission and which {@link PermissionAttachment} provides it
+ */
+public class PermissionAttachmentInfo {
+    private final Permissible permissible;
+    private final String permission;
+    private final PermissionAttachment attachment;
+    private final boolean value;
+
+    public PermissionAttachmentInfo(Permissible permissible, String permission, PermissionAttachment attachment, boolean value) {
+        if (permissible == null) {
+            throw new IllegalArgumentException("Permissible may not be null");
+        } else if (permission == null) {
+            throw new IllegalArgumentException("Permissions may not be null");
+        }
+
+        this.permissible = permissible;
+        this.permission = permission;
+        this.attachment = attachment;
+        this.value = value;
+    }
+
+    /**
+     * Gets the permissible this is attached to
+     *
+     * @return Permissible this permission is for
+     */
+    public Permissible getPermissible() {
+        return permissible;
+    }
+
+    /**
+     * Gets the permission being set
+     *
+     * @return Name of the permission
+     */
+    public String getPermission() {
+        return permission;
+    }
+
+    /**
+     * Gets the attachment providing this permission. This may be null for default
+     * permissions (usually parent permissions).
+     *
+     * @return Attachment
+     */
+    public PermissionAttachment getAttachment() {
+        return attachment;
+    }
+
+    /**
+     * Gets the value of this permission
+     *
+     * @return Value of the permission
+     */
+    public boolean getValue() {
+        return value;
+    }
+}