refactor: move content under data/ for Git Sync compatibility

Git Sync expects folders: pages/themes/plugins/config/data
Content now at data/content/{fqdn}/pages/

Assisted-by: GLM-5 via Crush <crush@charm.land>

data/content/charters.turnsys.com/pages/195.JointVenture.TSYSGroup/default.md

@@ -0,0 +1,10 @@
+---
+title: 'TSYS Group'
+menu: 'TSYS Group'
+---
+
+# TSYS Group
+
+While the TSYS Group as a whole is not in scope of this proposal, it is the overall "container" that all the pieces make up.
+
+- Please see the [TSYS Group Plan](https://plan.turnsys.com)