When starts use ps to get process ID

I found sometimes that pidcat don't found the application because the start of application is not on the logcat buffer, It means pidcat don't show anything. I think should be easy, to run `adb shell "ps"` and search here the package to obtain processID, and with that, always you run pidcat if device is working, pidcat show you the log of the application.

Actually I'm really busy, if not, I should do more or less well. But I don't have time now to add this.

Start by locating pidcat's application process lookup and logcat startup path. Review how the package is currently found, then verify the proposed adb shell "ps" lookup against a running device; done means pidcat obtains the process ID even when the application's startup is absent from the logcat buffer.

Written by the indexing model from the issue text.