test: refactor test utils to typescript

[armano2]

Test utils are currently blocking refactoring of some packages to typescript.

Description

Notes:

• @marionebl/sander package is no longer maintained and there is no type definitions for it, i replaced it with fs-extra, as node target version is 6 (util.promisify or fs.promises is not supported yet in this version)
• tmp package got removed from cli (unused) and is used in test utils as replacement.

While refactoring this package i noticed that tmp folders are not removed on windows (we should add call to removeCallback) ideally we want that bootstrapping functions return tmp.DirResult instead of directory.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[armano2]

updated