Move highly sensitive secrets to new "super" vault

The idea bebind this is to be able to give vault access to new DevOps members without giving away more important credentials like Hetzner's.

misc/vaults/vault_hcloud.yml

+$ANSIBLE_VAULT;1.1;AES256
+64363566353835316331303139336231656638643563343264646563613566643265353864643939
+6435346530353063346337333837303736323733663030370a373833373935333961343732656165
+62323136353130643564643862663433366664323132663532663338623864313838353662366632
+3663333932653262380a396634326431333761396562306566643464643463623166616536323666
+38613966333933373235663566373139333330623964383530663962383562643336323933313730
+36646261396139613562616637373139373661313266336230663533333664303363626538396264
+62613537353432616461633033643965386661636533303934336161323136656138333362623836
+63366535333339353365376239393564656631343234313262383437313638613339633937623261
+3665