src/preferences Code formatting

* No functional change

code formatting changes only

Change-Id: Id861adea9266a9ccbf9925d36e4a2bad85b640b7
Reviewed-on: https://review.haiku-os.org/c/895
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

network preflet: Add B_NETWORK_INTERFACE_TYPE_DIAL_UP.

network preflet: Make InterfaceListItem dumber

* Allows us to use InterfaceListItem for non-physical
interface things (like a VPN connection)

Network: made InterfaceListItem::Name() const.

Network: added interface list item.

* Added BNetworkInterfaceListItem that can be used by interface protocol
add-ons to represent their functionality in the list view.
* It will automatically update itself on changes, and will show the
specified label, and address, if any, as well as indicate whether or
not the family has been disabled (which doesn't work perfectly yet,
as IFF_AUTO_CONFIGURED is on the interface level).
* Therefore, the interface list item will no longer show the address,
but the type of the device instead.
* Introduced the BNetworkConfigurationListener interface that is used
to broadcast network updates to.

Network: also notify interface list items

* When the network configuration changes.

Network: show interface addresses in list item.

* No family prefix yet.

Network: integrated former hardware view from add-on.

* The interfaces logic is within the main application, so is the
new interface view.
* Disabling/renegotiating does not work yet.
* Reveals a bug in some interface code; when you click on an ethernet
device first, there is no place for the wireless menu. When you then
press on a wireless device, it crashes in BMenuField code.
In the other direction, there is then an empty space.
* Fixed list item width reporting.

Network: WIP of redesign.

* Fletched out new add-on API.
* Moved InterfaceListItem from the interfaces add-on into the
application.
* Renamed NetworkSetup* to Network* respectively NetworkSettings*.

Network: made InterfaceListItem::Name() const.

Network: added interface list item.

* Added BNetworkInterfaceListItem that can be used by interface protocol
add-ons to represent their functionality in the list view.
* It will automatically update itself on changes, and will show the
specified label, and address, if any, as well as indicate whether or
not the family has been disabled (which doesn't work perfectly yet,
as IFF_AUTO_CONFIGURED is on the interface level).
* Therefore, the interface list item will no longer show the address,
but the type of the device instead.
* Introduced the BNetworkConfigurationListener interface that is used
to broadcast network updates to.

Network: also notify interface list items

* When the network configuration changes.

Network: show interface addresses in list item.

* No family prefix yet.

Network: integrated former hardware view from add-on.

* The interfaces logic is within the main application, so is the
new interface view.
* Disabling/renegotiating does not work yet.
* Reveals a bug in some interface code; when you click on an ethernet
device first, there is no place for the wireless menu. When you then
press on a wireless device, it crashes in BMenuField code.
In the other direction, there is then an empty space.
* Fixed list item width reporting.

Network: WIP of redesign.

* Fletched out new add-on API.
* Moved InterfaceListItem from the interfaces add-on into the
application.
* Renamed NetworkSetup* to Network* respectively NetworkSettings*.