Define style guide for consistency in code formatting

[d-gs]

Feature request

Style guides should be defined for consistency in the source code formatting.
This also include adding Eclipse formatting rules to import in the IDE to help developers to apply them.

Expected Behavior - What where you expecting to happen?

Developers should be able to check or automatically format their code; maintainers should have a guide to review formatting changes and ask for re-formatting in case of non-conformance.

Current Behavior - What happens?

No guidelines and Eclipse auto-formatting causes unwanted changes, which adds some clutter to the PRs to be reviewed.

Possible Solution

Provide a style guide into the guidelines and formatting files for the IDEs (Eclipse and maybe others).

Context

PRs contain some changes due to re-formatting by Eclipse, which was temporarily fixed by #12.

Notes and further information

[holzerma]

we need a solutions which works for every project in this organization.
see aposin/LicenseScout#27