This adds
```
$ mmcli -m 0 --cell-broadcast-list-cbm
/org/freedesktop/ModemManager1/CBM/0 (received)
/org/freedesktop/ModemManager1/CBM/0 (received)
$ mmcli -m 0 --cell-broadcast-delete-cbm=0
successfully deleted CBM from modem
$ mmcli -m 0 --cbm 0
--------------------------
General | path: /org/freedesktop/ModemManager1/CBM/1
--------------------------
Content | text: This is a test of the Ontario Alert Ready System. There is no danger to your health or safety
--------------------------
Properties | update: 0
| message code: 0
```
Signed-off-by: Guido Günther <agx@sigxcpu.org>
This new interface allows modems to expose the list of available
connection profiles stored in the device and edit or delete them; as
long as the underlying device/protocol allows it.
mmcli is GPLv2+; that's what --version has always said and that's what the
README in ModemManager sources specifies:
License.
The ModemManager and mmcli binaries are both GPLv2+.
The libmm-glib library is LGPLv2+.
Some operations are clearly asynchronous (e.g. monitoring modem state), while
others are clearly synchronous (e.g. printing modem info). So just allow option
groups to force the operation to be async or sync based on the detected action.
The original command line interface was written based on a hand-made libmm. This
commit ports the Manager interface handling to the new gdbus-codegen-based
libmm-glib.