- Move some persistent resources into SingletonResources class (#1835)

- Rename ResultOk to ResultVoid

Move environment variables to singleton

Co-authored-by: stas <statis@microsoft.com>

src/ApiService/Tests/OrmModelsTest.cs

@@ -837,6 +837,12 @@ namespace Tests
         }
 
 
+        [Property]
+        public bool RegressionReportOrReport(RegressionReportOrReport e)
+        {
+            return Test(e);
+        }
+
         /*
         //Sample function on how repro a failing test run, using Replay
         //functionality of FsCheck. Feel free to