Fix build issues with Android Studio Dolphin and upgrade Gradle

[Kyle-Falconer]

These changes allow the Talkback project to build from within Android Studio.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[PatrykMis]

Looks great.

Empty manifest (<manifest />) isn't needed though.

[Gryzor]

Is there any date for this (re-updated to today) to be merged? has google really not touched TalkBack since roughly two years ago?

[KaiDevrim]

Does anyone have an APK that they can share with me?

[Gryzor]

I'm able to build it on an m1 Mac using rossetta2. I had to touch the build script but it works (I use it to run on emulators).

[hongjingzhou]

works for me

[PatrykMis]

https://github.com/talkback-foss-team/talkback-foss/releases/latest