Allow overwriting the encoder set / use encoders of requests / more orjson for more speed

[devkral]

Checklist

• The code has 100% test coverage.
• The documentation was properly created or updated (if applicable) following the correct guidelines and appropriate language.
• I branched out from the latest main or is a sub-branch.

Summary or description

Changes:

• Use assigned encoders at requests for json_encoder.
• save encoders as instances to application,
• allow temporary use of a different encoder set
• Use more orjson for more speed