Use parameter key_type instead 'compressed' parameter

[Yamaguchi]

When the taypurs key is created with Tapyrus::Key.new(), a warning message is printed:

Use key_type parameter instead of compressed. compressed parameter removed in the future.

This PR fixes the way to create a Key like this:

Tapyrus::Key.new(priv_key: key) => Tapyrus::Key.new(priv_key: key, key_type: Tapyrus::Key::TYPES[:compressed])

In most cases in glueby, we use compressed key only.