zot: helm chart and app cue configuration

Zot OCI registry: https://zotregistry.dev/

Change-Id: I40ec7383cdc6450613deae862d92d25cc647c892
diff --git a/core/installer/app.go b/core/installer/app.go
index 73a8e64..611318d 100644
--- a/core/installer/app.go
+++ b/core/installer/app.go
@@ -36,6 +36,7 @@
 	"values-tmpl/url-shortener.cue",
 	"values-tmpl/gerrit.cue",
 	"values-tmpl/jenkins.cue",
+	"values-tmpl/zot.cue",
 }
 
 var infraAppConfigs = []string{