Provide a metadata file which will ease configuration with Identity Providers

[deepakprabhakara]

Is your proposal related to a problem?

Some IdPs allow the uploading of a metadata file that will help populate all the fields when creating a SAML app.

Describe the solution you'd like

We should provide this metadata file with all the required fields at an endpoint so that the user can point their customers to it. This will ease the manual configuration of setting up the SAML app.