Add RRDTool integration for monitoring WireGuard stats

Introduces a new RRDTool service for tracking WireGuard interface and peer statistics. Adds required Docker configuration, API key handling, and new scripts for managing RRD files. Updates the `entrypoint.sh` and API permissions to accommodate the new functionality.

docker-compose-no-nginx-dev.yml

@@ -8,12 +8,14 @@ services:
     environment:
       - SERVER_ADDRESS=127.0.0.1
       - DEBUG_MODE=True
-      - COMPOSE_VERSION=02b
+      - COMPOSE_VERSION=02r
     volumes:
       - wireguard:/etc/wireguard
       - static_volume:/app_static_files/
       - .:/app
       - dnsmasq_conf:/etc/dnsmasq
+      - app_secrets:/app_secrets/
+      - rrd_data:/rrd_data/
     ports:
       # Do not directly expose the Django port to the internet, use some kind of reverse proxy with SSL.
       - "127.0.0.1:8000:8000"
@@ -40,6 +42,18 @@ services:
     depends_on:
       - wireguard-webadmin
 
+  wireguard-webadmin-rrdtool:
+    container_name: wireguard-webadmin-rrdtool
+    restart: unless-stopped
+    build:
+      context: ./containers/rrdtool
+      dockerfile: Dockerfile-rrdtool
+    volumes:
+      - app_secrets:/app_secrets/
+      - rrd_data:/rrd_data/
+    depends_on:
+      - wireguard-webadmin
+
   wireguard-webadmin-dns:
     container_name: wireguard-webadmin-dns
     restart: unless-stopped
@@ -52,4 +66,6 @@ services:
 volumes:
   static_volume: 
   wireguard:
-  dnsmasq_conf:
+  dnsmasq_conf:
+  app_secrets:
+  rrd_data: