Add GetGroupData method to Permissions library (#90)

Author: k1lly0u

src/Libraries/Permission.cs

@@ -762,6 +762,22 @@ public bool GroupExists(string groupName)
             return !string.IsNullOrEmpty(groupName) && (groupName.Equals("*") || groupsData.ContainsKey(groupName));
         }
 
+        /// <summary>
+        /// Returns the data for the specified group
+        /// </summary>
+        /// <param name="groupName"></param>
+        /// <returns></returns>
+        public GroupData GetGroupData(string groupName)
+        {
+            if (!groupsData.TryGetValue(groupName, out GroupData groupData))
+            {
+                return null;
+            }
+
+            // Return the data
+            return groupData;
+        }
+
         /// <summary>
         /// Returns existing groups
         /// </summary>