Move Trial Sessions, Trial Sessions Copy, and Hearings to Postgres

[pixiwyn]

branch off: origin/10391-dynamo-migrations-kysely-aurora-rds-tokens (till merged in)

DynamoDB Entities to Replace:

• set-notices-for-trial-session-job-${jobId}
• hearing
• trial-session
• trial-session-working-copy

convert the functions in web-api/src/persistence/dynamo/trialSessions to postgres kysely functions.

DynamoDB Functions to Move (unit tests can be removed):