Feature: silacodegenerator-template-engine modification

Why this Merge-Request ?

• This merge request should resolve the following issues: #53 and #56

Please explain, what changes you introduced:

• template fix, logging output fix

What Part(s) of SiLA_python is affected ? (e.g. sila_library, codegenerator, implementations )

• codegenerator

Are there backwards-compatible changes ?

• no

Are there expected incompatible changes / side effects

• no

Checklist

• linked to related GitLab issues ?
• added relevant changes to the CHANGELOG.md in the [vNext] section?