Added config files needed for installation instructions

prometheus.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=Prometheus
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+User=prometheus
+Group=prometheus
+Type=simple
+ExecStart=/usr/local/bin/prometheus \
+	--config.file /etc/prometheus/prometheus.yml \
+	--storage.tsdb.path /var/lib/prometheus \
+	--web.console.templates=/etc/prometheus/consoles \
+	--web.console.libraries=/etc/prometheus/console_libraries
+[Install]
+WantedBy=multi-user.target

prometheus.yml

@@ -0,0 +1,14 @@
+global:
+  scrape_interval: 15s
+
+scrape_configs:
+  - job_name: 'prometheus'
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['localhost:9090']
+  - job_name: 'hx_metrics'
+    scrape_interval: 1m
+    static_configs:
+      - targets: ['localhost:8082']
+        labels:
+          service_name: hx_read_write_stats