added basic xml comments to all Oqtane.Services interfaces

Oqtane.Client/Services/Interfaces/IJobLogService.cs

@@ -4,10 +4,22 @@ using System.Threading.Tasks;
 
 namespace Oqtane.Services
 {
+    /// <summary>
+    /// Service to read the job schedule log
+    /// </summary>
     public interface IJobLogService
     {
+        /// <summary>
+        /// Return a list of all <see cref="JobLog"/> entries
+        /// </summary>
+        /// <returns></returns>
         Task<List<JobLog>> GetJobLogsAsync();
 
+        /// <summary>
+        /// Return a <see cref="JobLog"/> entry for the given Id
+        /// </summary>
+        /// <param name="jobLogId"></param>
+        /// <returns></returns>
         Task<JobLog> GetJobLogAsync(int jobLogId);
     }
 }