Improve Android logging

[mhsmith]

Is your feature request related to a problem? Please describe.

When running an Android app, the logcat filtering currently displays a few specific tags from all apps. The problem is:

• If you have multiple apps on the device, you may see logs from all of them mixed together.
• There may be important information in other tags, such as Java or JNI crashes, which Briefcase doesn't display at all.

Describe the solution you'd like

Briefcase should log all tags, but only for the app the user is working on. This would match the default behavior of Android Studio.

Depending on what's best supported by the tools, this may involve filtering by process ID, user ID, application ID, or something else.

[freakboy3742]

+1.

An additional nice-to-have - it would be desirable to be able to configure this as an end user. No matter what we pick as a default, there will be a situation where the value we've picked isn't as helpful as it could be. The user can always involve adb logcat themselves, but setting up the runtime environment to access Briefcase's adb instance isn't trivial for end users.

It's not worth doing excessive gymnastics to make this happen; but if there's an easy pass through of arguments that we can enable (e.g., a multi-valued --adb-filter <filter to add> option), it might be worth considering.