Logging expansion

Adds Promtail and Loki to the metrics stack, configuring them as a datasource in grafana on deployment
Adds a dashboard to monitor the system (logs for producer and consumer)
Restructures the base directory so deployment manifests are moved into a deployments folder
Adds selective labels to producer, consumer and addon so that their logs are ingested by promtail

deployment/docker/config/promtail/config.yml

@@ -0,0 +1,27 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://loki:3100/loki/api/v1/push
+    tenant_id: knightcrawler
+
+scrape_configs:
+  - job_name: scraper
+    docker_sd_configs:
+      - host: unix:///var/run/docker.sock
+        refresh_interval: 15s
+        filters:
+          - name: label
+            values: ["logging=promtail","com.docker.compose.project=knightcrawler"]
+    relabel_configs:
+      - source_labels: ["__meta_docker_container_name"]
+        regex: "/(.*)"
+        target_label: "container"
+      - source_labels: ["__meta_docker_container_log_stream"]
+        target_label: "logstream"
+      - source_labels: ["__meta_docker_container_label_logging_jobname"]
+        target_label: "job"