Rust wrapper for the libkdbx library.

The library currently depends on the following other libraries:

• QT (The QCore components QDateTime, QString, QUuid, QList, and others are currently used by the core classes.
• Botan

git submodule init
git submodule update
// TODO create the config-keepassx.h file in src/core
cargo build

• https://gist.github.com/msmuenchen/9318327