feat: Add Grafana provisioning and Prometheus configuration for telecom platform monitoring

- Add Grafana dashboard provisioning with telecom-dashboards provider, 10s update interval, UI updates enabled
- Add Grafana datasource provisioning with Prometheus (default) and InfluxDB Flux datasources
- Add InfluxDB datasource with telecom org/bucket, admin credentials, token authentication
- Add Prometheus configuration with 15s scrape/evaluation intervals, alert_rules.yml integration
- Add Alertmanager integration

monitoring/grafana/provisioning/dashboards/dashboards.yml

@@ -0,0 +1,12 @@
+apiVersion: 1
+
+providers:
+  - name: 'telecom-dashboards'
+    orgId: 1
+    folder: ''
+    type: file
+    disableDeletion: false
+    updateIntervalSeconds: 10
+    allowUiUpdates: true
+    options:
+      path: /var/lib/grafana/dashboards

monitoring/grafana/provisioning/datasources/datasources.yml

@@ -0,0 +1,25 @@
+apiVersion: 1
+
+datasources:
+  - name: Prometheus
+    type: prometheus
+    access: proxy
+    url: http://prometheus:9090
+    isDefault: true
+    editable: true
+
+  - name: InfluxDB
+    type: influxdb
+    access: proxy
+    url: http://influxdb:8086
+    database: telecom
+    user: admin
+    password: password123
+    jsonData:
+      version: Flux
+      organization: telecom
+      defaultBucket: telecom
+      tlsSkipVerify: true
+    secureJsonData:
+      token: telecom-super-secret-auth-token
+    editable: true

monitoring/prometheus/prometheus.yml

@@ -0,0 +1,48 @@
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+
+rule_files:
+  - "alert_rules.yml"
+
+alerting:
+  alertmanagers:
+    - static_configs:
+        - targets:
+          - alertmanager:9093
+
+scrape_configs:
+  - job_name: 'telecom-api-server'
+    static_configs:
+      - targets: ['host.docker.internal:8000']
+    metrics_path: '/metrics'
+    scrape_interval: 5s
+
+  - job_name: 'telecom-charging-engine'
+    static_configs:
+      - targets: ['host.docker.internal:3001']
+    metrics_path: '/metrics'
+    scrape_interval: 5s
+
+  - job_name: 'telecom-packet-gateway'
+    static_configs:
+      - targets: ['host.docker.internal:9000']
+    metrics_path: '/metrics'
+    scrape_interval: 5s
+
+  - job_name: 'prometheus'
+    static_configs:
+      - targets: ['localhost:9090']
+
+  - job_name: 'node-exporter'
+    static_configs:
+      - targets: ['node-exporter:9100']
+
+  - job_name: 'redis'
+    static_configs:
+      - targets: ['redis:6379']
+
+  - job_name: 'influxdb'
+    static_configs:
+      - targets: ['influxdb:8086']
+    metrics_path: '/metrics'