docs: restructure docs (#14421)

Closes #13434 
Supersedes #14182

---------

Co-authored-by: Ethan <39577870+ethanndickson@users.noreply.github.com>
Co-authored-by: Ethan Dickson <ethan@coder.com>
Co-authored-by: Ben Potter <ben@coder.com>
Co-authored-by: Stephen Kirby <58410745+stirby@users.noreply.github.com>
Co-authored-by: Stephen Kirby <me@skirby.dev>
Co-authored-by: EdwardAngert <17991901+EdwardAngert@users.noreply.github.com>
Co-authored-by: Edward Angert <EdwardAngert@users.noreply.github.com>

docs/admin/monitoring/index.md

@@ -0,0 +1,24 @@
+# Monitoring Coder
+
+Learn about our the tools, techniques, and best practices to monitor Coder your
+Coder deployment.
+
+## Quick Start: Observability Helm Chart
+
+Deploy Prometheus, Grafana, Alert Manager, and pre-built dashboards on your
+Kubernetes cluster to monitor the Coder control plane, provisioners, and
+workspaces.
+
+![Grafana Dashboard](../../images/admin/monitoring/grafana-dashboard.png)
+
+Learn how to install & read the docs on the
+[Observability Helm Chart GitHub](https://github.com/coder/observability)
+
+## Table of Contents
+
+- [Logs](./logs.md): Learn how to access to Coder server logs, agent logs, and
+  even how to expose Kubernetes pod scheduling logs.
+- [Metrics](./metrics.md): Learn about the valuable metrics to measure on a
+  Coder deployment, regardless of your monitoring stack.
+- [Health Check](./health-check.md): Learn about the periodic health check and
+  error codes that run on Coder deployments.