add support for bitbucket Api tokens

Author: ScheuchzerStreamlit

src/ScmBackup/Configuration/ConfigSource.cs

@@ -29,12 +29,18 @@ internal class ConfigSource
         /// </summary>
         public string Name { get; set; }
 
+        /// <summary>
+        /// user name for api authentication, used only for Bitbucket
+        /// See issue 84
+        /// </summary>
+        public string ApiAuthName { get; set; }
+        
         /// <summary>
         /// user name for authentication
         /// (can be a different than the user whose repositories are backed up)
         /// </summary>
         public string AuthName { get; set; }
-
+        
         /// <summary>
         /// list of repository names which should be ignored
         /// </summary>

src/ScmBackup/Hosters/Bitbucket/BitbucketApi.cs

@@ -28,7 +28,9 @@ public List<HosterRepository> GetRepositoryList(ConfigSource source)
 
             if (source.IsAuthenticated)
             {
-                request.AddBasicAuthHeader(source.AuthName, source.Password);
+                // The new Bitbucket authentication method uses a different user for API authentication. See issue 84.
+                var authName = string.IsNullOrWhiteSpace(source.ApiAuthName) ? source.AuthName : source.ApiAuthName;
+                request.AddBasicAuthHeader(authName, source.Password);
             }
 
             string url = "/2.0/repositories/" + source.Name;