feat: add healthy filter for workspace queries (#21743)

Adds support for filtering workspaces by health status using
healthy:true or healthy:false in the search query.

This is done by changing `has-agent` to accept a list of statuses and
aliasing `health:true` to `has-agent:connected` and `healthy:false` to
`has-agent:timeout,disconnected`.

Fixes #21623

coderd/database/modelqueries.go

@@ -268,7 +268,7 @@ func (q *sqlQuerier) GetAuthorizedWorkspaces(ctx context.Context, arg GetWorkspa
 		pq.Array(arg.TemplateIDs),
 		pq.Array(arg.WorkspaceIds),
 		arg.Name,
-		arg.HasAgent,
+		pq.Array(arg.HasAgentStatuses),
 		arg.AgentInactiveDisconnectTimeoutSeconds,
 		arg.Dormant,
 		arg.LastUsedBefore,