23971 Proposed API and schema changes

[jacobshandling]

#23971

API changes:

this PR diff ("available_teams" change is adding missing documentation for current API behavior)

schema changes:

• new col in users table, settings, type json. Start with new setting, hidden_hosts_table_columns

semantics

• omitted "hidden_hosts_table_columns" field means "not yet set, use defaults": {"settings":{}}
• included and empty "hidden_hosts_table_columns" field means "no columns hidden, show all columns in the UI": {"settings":{"hidden_hosts_table_columns": []}}

[iansltx]

Was going to ask whether we should revise the default on me?include_settings but it looks like loading the hosts page pulls /me anyway so we can just revise that call to pull column settings when we need them (vs. trying to economize on HTTP requests now).

[jacobshandling]

Hey @rachaelshaw, hope you had a nice vacation. Assigning you this ticket, how do these specs look from product POV?