Add a troubleshooting auto check code

[schleichardt]

The code should check if all necessary things work

• [ ] pure Jackson stuff
• [ ] SphereJsonUtils pure
• [ ] SphereJsonUtils pojo mapping
• [ ] internet connection
• [ ] get tokens from auth ws
• [ ] use api

see also https://github.com/sphereio/sphere-jvm-sdk/issues/643

[schleichardt]

@nkuehn I decided to do the auto checking tool after the 1.0.0 release since we need to operate on code stable tool and I want to test the error cases with calm.

[nkuehn]

+1 there's more important stuff, right.