Add Oracle Secure Global Desktop support

Hi,

please add support for the Oracle Secure Global Desktop.
Product pages:
* https://docs.oracle.com/en-us/iaas/secure-desktops/home.htm
* https://docs.oracle.com/en/virtualization/secure-global-desktop/

It has two modes web and native (some installations only have the native mode):
1. Login to web interface (on login page you have if available the choice between web and native)
2. Get a "something.sgd" download
3. Open that file using that oracle client
4. The oracle client opens a callback url in the browser
5. Select destination host/session within the web interface
6. It opens a native window with the remote session in it. It looks like a windowed RDP session (but probably is a custom protocol).


An integration into RDM could look like this:

1. Import all of the sessions from the web portal
2. Click on one of these sessions in RDM and have it connect to it within its embedded view.
3. Also be able to use all of the other features of RDM esp. those in regards to automating the session (like executing a script within it).