📝(self-hosted) reorganize doc for new installation exmaples

We will introduce in the next commits the compose set-up that also
require examples values/config files. Thus, re-organize the kube ones
to  dedicated folder, to make the files organisation extensible.

docs/examples/helm/postgresql.values.yaml

@@ -0,0 +1,7 @@
+auth:
+  username: dinum
+  password: pass
+  database: meet
+tls:
+  enabled: true
+  autoGenerated: true