Add initial files for Audio Dashboard Management System

- Created .env.example for environment variable configuration.
- Added docker-compose.yml for service orchestration.
- Implemented frequency response extraction in extract_frequency_response.py and convert_to_frequency_db.py.
- Generated output files: frequency_response_detailed.json, frequency_response_points.json, frequency_response.csv, and frequency_response_curve.png.
- Included sample measurement data for FiiO FA19 in CSV format.

.env.example

@@ -0,0 +1,15 @@
+# Database Configuration
+DATABASE_HOST=localhost
+DATABASE_PORT=3306
+DATABASE_NAME=audio
+DATABASE_USER=root
+DATABASE_PASSWORD=root123
+
+# Application Settings
+APP_NAME=Audio Dashboard API
+DEBUG=True
+
+# Meilisearch Configuration
+MEILISEARCH_URL=http://ec2-18-184-205-87.eu-central-1.compute.amazonaws.com:7700
+MEILISEARCH_API_KEY=young9#!UJsD219921031
+MEILISEARCH_INDEX=models