CB-327 Save credentials flag in ConnectionInfo

server/bundles/io.cloudbeaver.server/schema/service.core.graphqls

@@ -188,6 +188,7 @@ type ConnectionInfo {
     connected: Boolean!
     provided: Boolean!
     readOnly: Boolean!
+    saveCredentials: Boolean!
 
     connectTime: String
     connectionError: ServerError

server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/model/WebConnectionInfo.java

@@ -135,6 +135,11 @@ public class WebConnectionInfo {
         return dataSourceContainer.isConnectionReadOnly();
     }
 
+    @Property
+    public boolean isSaveCredentials() {
+        return dataSourceContainer.isSavePassword();
+    }
+
     @Property
     public String getConnectTime() {
         return CBConstants.ISO_DATE_FORMAT.format(dataSourceContainer.getConnectTime());