fix: introduce dedicated queries for workspaces and workspace agents metrics (#19786)

aid in differentiation between sources of calls to `GetWorkspaces` but introducing new queries for metrics specific use cases

---------

Signed-off-by: Callum Styan <callumstyan@gmail.com>

coderd/database/queries/workspaces.sql

@@ -983,3 +983,23 @@ WHERE
 	AND fsb.initiator_id != 'c42fdf75-3097-471c-8c33-fb52454d81c0'::uuid
 GROUP BY t.name, COALESCE(tvp.name, ''), o.name
 ORDER BY t.name, preset_name, o.name;
+
+-- name: GetWorkspacesForWorkspaceMetrics :many
+SELECT
+    u.username as owner_username,
+    t.name as template_name,
+    tv.name as template_version_name,
+    pj.job_status as latest_build_status,
+    wb.transition as latest_build_transition
+FROM workspaces w
+JOIN users u ON w.owner_id = u.id
+JOIN templates t ON w.template_id = t.id
+JOIN workspace_builds wb ON w.id = wb.workspace_id
+JOIN provisioner_jobs pj ON wb.job_id = pj.id
+LEFT JOIN template_versions tv ON wb.template_version_id = tv.id
+WHERE w.deleted = false
+AND wb.build_number = (
+    SELECT MAX(wb2.build_number)
+    FROM workspace_builds wb2
+    WHERE wb2.workspace_id = w.id
+);