[+] add "Tables Overview" dashboard (#918)

* [+] add "Tables Overview" dashboard

New dashboard uses tabs/rows and combines old "Tables Top" and "Biggest
relations treemap" dashboards. Tweak "Table details" dashboard

Author: pashagolub

docker/compose.grafana.yml

@@ -9,6 +9,7 @@ services:
       GF_DASHBOARDS_DEFAULT_HOME_DASHBOARD_PATH: /var/lib/grafana/dashboards/1-global-db-overview.json
       GF_INSTALL_PLUGINS: marcusolsson-treemap-panel
       GF_AUTH_ANONYMOUS_ORG_ROLE: Admin
+      # GF_FEATURE_TOGGLES_ENABLE: dashboardNewLayouts
     ports:
       - "3000:3000"
     restart: unless-stopped

docker/compose.pgbench.sh

@@ -4,5 +4,5 @@ cd "$(dirname "${BASH_SOURCE[0]}")"
 
 docker compose exec -e PGDATABASE=pgwatch postgres sh -c \
  "pgbench --initialize --scale=50 &&
-  pgbench --progress=5 --client=10 --jobs=2 --transactions=10000 &&
+  pgbench --progress=5 --client=10 --jobs=2 --time=300 --rate=150 &&
   pgbench --initialize --init-steps=d"