Spec update

General:
Updated docstrings in multiple namespaces
Updated general route configuration to support select_admin_mode

file_properties namespace:
New routes and structs for the file properties and templates API functionality

file_requests namespace:
New routes and structs for the file_requests API functionality

files:
deprecate preview routes for files_properties

properties:
removed in favor of file_properties

team_property_templates:
removed in favor of file_properties

team:
deprecate beta properites routes

team_members:
Update NamePart? to be OptionalNamePart?

team_policies:
Add new team policies for SSO Paper, RolloutMethod and PasswordStrength

Bug fixes