gui: predefined output formats on par with adb logcat

[MartinWallgren]

Adb logcat support the following formats
"adb logcat -v brief" - Display priority/tag and the PID of process issuing the message (the default format).
"adb logcat -v process" - Display PID only.
"adb logcat -v tag" - Display the priority/tag only.
"adb logcat -v raw" - Display the raw log message, with no other metadata fields.
"adb logcat -v time" - Display the date, invocation time, priority/tag, and PID of the process issuing the message.
"adb logcat -v thread" - Display the priority, tag, and the PID and TID of the thread issuing the message.
"adb logcat -v threadtime" - Display the date, invocation time, priority, tag, and the PID and TID of the thread issuing the message.
"adb logcat -v long" - Display all metadata fields and separate messages with a blank lines.

lokatt should support the same -v params mapping to predefined filters matching the format from adb logcat