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.

docker-compose.yml

@@ -0,0 +1,41 @@
+version: '3.8'
+
+services:
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: audio-dashboard-backend
+    environment:
+      - DATABASE_HOST=${DATABASE_HOST:-localhost}
+      - DATABASE_PORT=${DATABASE_PORT:-3306}
+      - DATABASE_NAME=${DATABASE_NAME:-audio}
+      - DATABASE_USER=${DATABASE_USER:-root}
+      - DATABASE_PASSWORD=${DATABASE_PASSWORD:-root123}
+      - APP_NAME=${APP_NAME:-Audio Dashboard API}
+      - DEBUG=${DEBUG:-True}
+      - MEILISEARCH_URL=${MEILISEARCH_URL:-http://ec2-18-184-205-87.eu-central-1.compute.amazonaws.com:7700}
+      - MEILISEARCH_API_KEY=${MEILISEARCH_API_KEY:-young9#!UJsD219921031}
+      - MEILISEARCH_INDEX=${MEILISEARCH_INDEX:-models}
+    ports:
+      - "8083:8000"
+    restart: unless-stopped
+    networks:
+      - audio-network
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    container_name: audio-dashboard-frontend
+    ports:
+      - "8082:80"
+    depends_on:
+      - backend
+    restart: unless-stopped
+    networks:
+      - audio-network
+
+networks:
+  audio-network:
+    driver: bridge