Release v0.12

Version: 0.12
Commit: a2eab34

Two APKs: RootMyGalaxyNext-0.12.apk is the release build, and
RootMyGalaxyNext-0.12-debug.apk is the same code with debugging on. Both are
signed with the repository release key, so either installs over the other and over releases
of this fork that share its package id. This build is its own app
(dev.rushiranpise.rmgnext), so Root My Galaxy is left alone if it is installed - and so
are this app's own settings, history and superuser grant, which start empty here.

Changes since v0.11:

• Merge pull request #42 from rushiranpise/dev
• feat(payload): hide the device-tier row when no source covers this phone
• feat(home): hide the CVE test once this phone is rooted
• fix(support): ask the chain before calling no-payload a failure
• bump