docs: improved api docs.
docs/api: added sections for all 'endpoints'.
docs/api: restart an app.
docs: added docs for get env.
docs/api: added docs about set environ.
docs/api: added docs about remove environ.
docs/api: added docs about list platforms.
docs/api: added docs about team list.
docs/api: fixed a typo.
docs: added docs about add team.