Extract complianceportal package from trust and probo

Split the compliance portal into an admin-facing management side and a
public-facing visitor side under pkg/complianceportal. Trust-center CRUD,
domains, custom links, frameworks, files and accesses move out of
pkg/probo, and the visitor read logic moves out of pkg/trust. IAM actions
migrate onto compliance-portal scopes.

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/complianceportal/visitor/robots.txt.tmpl

@@ -0,0 +1,9 @@
+{{- if .Indexable }}
+User-Agent: *
+Allow: /
+
+Sitemap: {{ .BaseURL }}/sitemap.xml
+{{- else }}
+User-Agent: *
+Disallow: /
+{{- end }}