made oauth architecture more generalized

config/config.json

@@ -24,10 +24,14 @@
         "StorageDirectory": "./data/"
     },
     "SSOSettings": {
-        "AllowGitLabSSO": true,
-        "GitLabSecret" : "8526ada64f38a1a67cafe6650d54310f1484f8a5d06ad23abb9f8e4b8af1c429",
-        "GitLabId": "0af4138195d246d5d4e958a93100379066bb087fa9892cd323b0c97bbd696008",
-        "GitLabUrl": "http://dockerhost:8080"
+        "gitlab": {
+            "Allow": true,
+            "Secret" : "8526ada64f38a1a67cafe6650d54310f1484f8a5d06ad23abb9f8e4b8af1c429",
+            "Id": "0af4138195d246d5d4e958a93100379066bb087fa9892cd323b0c97bbd696008",
+            "AuthEndpoint": "http://dockerhost:8080/oauth/authorize",
+            "TokenEndpoint": "http://dockerhost:8080/oauth/token",
+            "UserApiEndpoint": "http://dockerhost:8080/api/v3/user"
+        }
     },
     "SqlSettings": {
         "DriverName": "mysql",