Modernization and adb deletion helpers

[trevjonez]

Sorry for the PR bomb, just trying to get some tickets going on the composer repo since they are now bubbling up to the gradle plugin repo as development seems to have slowed on commander/composer.

this is in support of: https://github.com/gojuno/composer/issues/16 https://github.com/gojuno/composer/issues/150 https://github.com/gojuno/composer/issues/160 https://github.com/trevjonez/composer-gradle-plugin/issues/48

I've got a branch on composer that already consumes these changes and passes all tests running directly in macOs. (docker image has gone stale it seems, 404 errors on me)