CSV Import for Additional Triage Data in AKTIN DWH

**User Story**
As a hospital in Freiburg, I want to upload additional triage data via CSV import into the AKTIN DWH, alongside the waiting room triage ID. This will allow me to integrate structured triage information into the i2b2 database and use it for later analysis.

**Example:**
A hospital in Freiburg records triage information (e.g., priority levels, waiting times, triage personnel) in a separate system and wants to regularly import this data into AKTIN DWH via CSV.
Requirements
Implementation of a CSV import function for additional triage data in AKTIN DWH.
Configurable mapping of CSV columns to relevant fields in the i2b2 database.
Ability to link imported data to existing patient records (e.g., via the waiting room triage ID or case ID).
Validation of imported data for consistency and correctness.
Logging and error handling for the import process.

**Benefits**
Enables cross-system integration of triage data without requiring direct HL7 interface modifications.
Provides flexibility for hospitals that capture triage information in separate systems.
Facilitates retrospective analyses of triage processes by storing structured data in the i2b2 database.
This feature improves data availability for emergency department triage analysis and enables a detailed examination of waiting times, prioritization, and resource utilization.