Add a separate module for tools and helper functions

[magnesj]

There are several tool and helper classes in ResInsight. To improve the architechture, more modules is suggested. As the first step, create a separate module located in ApplicationLibCode called Tools. This module is a separate library with dependency on QtCore.

Identify files in ResInsight that can be moved into this module. Criteria to move is

• only depending on c++ or QtCore
• helper or tool class
• no dependency on caf or cvf

The plan is to move the files first. When the moving of files has stabilized, the files can be renamed or put into a separate namespace.