Update prettierrc configuration for monorepo

Merge Request

Description

• npm project created on top level to add dev dependencies for prettier and plugins as well as scripts for prettier
• package-lock.json moved to top level
• Usage of the new prettier script in the pipeline
• prettier configuration for everything except frontend now defined on top level

Checklist

• The code compiles without any warnings.
• I followed the code review checklist.
• The documentation has been added/updated.
• There are no System.out.println() statements.
• package-lock.json was not changed unless I added or edited dependencies.

Related Issues

• Related DESH-69