feat: improve resources_monitoring for OOM & OOD monitoring (#16241)

As requested for [this
issue](https://github.com/coder/internal/issues/245) we need to have a
new resource `resources_monitoring` in the agent.

It needs to be parsed from the provisioner and inserted into a new db
table.

coderd/database/queries/workspaceagentresourcemonitors.sql

@@ -0,0 +1,38 @@
+-- name: FetchMemoryResourceMonitorsByAgentID :one
+SELECT
+	*
+FROM
+	workspace_agent_memory_resource_monitors
+WHERE
+	agent_id = $1;
+
+-- name: FetchVolumesResourceMonitorsByAgentID :many
+SELECT
+	*
+FROM
+	workspace_agent_volume_resource_monitors
+WHERE
+	agent_id = $1;
+
+-- name: InsertMemoryResourceMonitor :one
+INSERT INTO
+	workspace_agent_memory_resource_monitors (
+		agent_id,
+		enabled,
+		threshold,
+		created_at
+	)
+VALUES
+	($1, $2, $3, $4) RETURNING *;
+
+-- name: InsertVolumeResourceMonitor :one
+INSERT INTO
+	workspace_agent_volume_resource_monitors (
+		agent_id,
+		path,
+		enabled,
+		threshold,
+		created_at
+	)
+VALUES
+	($1, $2, $3, $4, $5) RETURNING *;