Continia E-Document Connector: add demo base and auth urls to allow for demoeing (#7106)

Add the possibility to run demo mode via the Continia E-Document
Connector.
The demo mode only works in Sandbox environments.

Fixes #7010 

Fixes
[AB#625268](https://dynamicssmb2.visualstudio.com/1fcb79e7-ab07-432a-a3c6-6cf5a88ba4a5/_workitems/edit/625268)

Author: lajo121964

src/Apps/W1/EDocumentConnectors/Continia/App/src/API Requests/ContiniaApiUrl.Codeunit.al

@@ -172,13 +172,16 @@ codeunit 6392 "Continia Api Url"
 
     local procedure COBaseUrl() Url: Text
     var
+        EnvironmentInformation: Codeunit "Environment Information";
         Handled: Boolean;
     begin
         OnGetCOBaseUrl(Url, Handled);
         if Handled then
             exit(Url);
 
-        exit('https://auth.continiaonline.com/api/v1');
+        if not EnvironmentInformation.IsSandbox() then
+            exit('https://auth.continiaonline.com/api/v1');
+        exit('https://demoauth.continiaonline.com/api/v1');
     end;
 
 
@@ -192,6 +195,9 @@ codeunit 6392 "Continia Api Url"
         if Handled then
             exit(Url);
 
+        if EnvironmentInformation.IsSandbox() then
+            exit('https://democdnapi.continiaonline.com/api/v1.0');
+
         LocalizedBaseUrl := GetBaseUrlForLocalization(EnvironmentInformation.GetApplicationFamily());
         if LocalizedBaseUrl <> '' then
             exit(LocalizedBaseUrl)