Create an activity to select verification method

User story

As a user I want to be able to select a verification method to verify the partner I'm pairing with so that I'm sure I'm getting their key(s).

This issue demands an activity where users can select a verification method and after that the activity for that method should be opened.

This issue is needed for the project because users should have some freedom as to how they want to secure their Bluetooth connection.

This feature can be added by creating an activity with a <ListView> which contains a (hardcoded) list of the verification methods.

This features is not ready until the following issues are finished: n/a

This task can be considered done when

[x] There is an activity for this
[x] There is a list of verification methods which can be clicked on to select the method.
[x] There is a checkbox which can be set to always use the selected method (e.g. "Remember my choice")

None