Display timestamp and tid

I make some changes in order to display timestamp and tid. I am interested in different tid, therefore, I assign different colors to different bg threads. I use `adb logcat -v threadtime` instead of `adb logcat -v brief`
[Screenshot](https://github.com/tzutalin/pidcat/blob/threadtime/screen.png)
Check out my forked version if someone has the similar requirements. I know it's ugly to show date, but it's useful in some cases.
https://github.com/tzutalin/pidcat

Start by comparing the forked version linked in the issue with the current pidcat behavior, then run `adb logcat -v threadtime` and compare it with `adb logcat -v brief`. Done means pidcat displays timestamps and thread IDs, with different background threads shown in different colors.

Written by the indexing model from the issue text.