Add ability to launch via external apps

[WingofaGriffin]

Being able to launch apps via a command in an app such as Daijisho would be useful for organizing app libraries. See https://github.com/magneticchen/Daijishou/issues/151

[SupernaviX]

I pushed changes to main so it can launch with am start -n com.simongellis.vvb/com.simongellis.vvb.MainActivity -a android.intent.action.VIEW -d {file.uri}, like Daijishou seems to expect. I'll make a new release in a few days

[Jetup13]

Was going through old issues on Daijishou github and no one had added vvs yet to Daijishou. I confirmed it works with your command and added it thanks!

-n com.simongellis.vvb/com.simongellis.vvb.MainActivity 
-a android.intent.action.VIEW 
-d {file.uri}