Add allowed field types to Ruuter Service Declarations

[turnerrainer]

AS InfoSec
I WANT allowed field types to be added to Ruuter DSLs Service Declarations
SO THAT only requests with expected fields would be processed

Acceptance Criteria

• Based on Add Service Declaration to Ruuter DSLs Ruuter#268
• Ruuter DSLs based on Refactor accessing Ruuter DSLs Buerokratt-DSL#5
• Add list of allowed fields per Service

Scope

• DSLs outside of "internal" folders as top priority
• DSLs in "internal" folder
• Do not add section needed to generate OpenAPI specs
• Define allowed request parameters for body
• Define allowed request parameters for headers