many fixes and improvements - rework for modules/ and common/

feat(emailer): add Postmark and Resend providers

backend/Properties/launchSettings.json

@@ -0,0 +1,12 @@
+{
+  "profiles": {
+    "Hutopy.Web - DEV": {
+      "commandName": "Project",
+      "launchBrowser": false,
+      "applicationUrl": "https://0.0.0.0:5001;http://0.0.0.0:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}