idevicebackup2: Include network/wifi devices

[codynhat]

Update idevicebackup2 to use idevice_new_with_options and include network devices.

Enables backups over Wifi as discussed in #845

[LaikaN57]

Tested and working.

[LaikaN57]

Thank you @codynhat! I too have been looking/waiting for this feature. @nikias LMK if you want any more testing done on this or if you would like me to attach version numbers as well in future runs.

$ tools/idevicebackup2 backup --full .
Backup directory is "."
Started "com.apple.mobilebackup2" service on port 54443.
Negotiated Protocol Version 2.1
Reading Info.plist from backup.
Starting backup...
Enforcing full backup from device.
Backup will be unencrypted.
Requesting backup from device...
Incremental backup mode.
[=                                                 ]   0% Finished
Receiving files
[=                                                 ]   0% Finished/77.1 MB)      
Receiving files
[==================================================] 100% (59.9 MB/59.9 MB)      
[=                                                 ]   1% Finished
Receiving files
[==================================================] 100% (64.2 MB/64.2 MB)      
[=                                                 ]   1% Finished
Receiving files
[==================================================] 100% (117.2 MB/117.2 MB)      
[=                                                 ]   1% Finished

[... truncated for length]