Add a Client-Id option to earthaccess.login

[rudigens]

There is currently no way to specify a Client-Id that can be added to the header for the Earthdata login. This Client-Id is required for all collections that require special permissions (e.g., as a member of a user group for pre-launch access).

[mfisher87]

Let's have this discussion in the issue you opened here: #1078

Thanks!