uim: add --uim-get-sim-state

uim: add --uim-get-sim-state

Provide same output as --get-pin-status for SIM/modem which require
using uim instead of dms command for that.
For now only the first present SIM card with only the first application
on the card is supported (which should cover the vast majority of
cases and allows to remain compatible with --get-pin-status output)

Suggested-by: Arjun AK <[email protected]>
Signed-off-by: Daniel Golle <[email protected]>