devtools/madb: add "madb start" command.

Adds the basic "madb start" command that launches the specified app on
all devices.

Change-Id: Id9708195f824f7c006b04b365f17ed60e0defdcb
4 files changed
tree: 36bec46c629fdf89a9a6227b9fc5284e64efcb79
  1. doc.go
  2. exec.go
  3. madb.go
  4. madb_test.go
  5. name.go
  6. name_test.go
  7. start.go