AppManager: Add API endpoint to install dodo app

Refactors cue definitions.

Next steps:
* Needs some cleanup, namespace is hard coded ...
* Maybe merge with regular install API
* Support exposing ports across clusters

Change-Id: Ibfc3c3f742b61f2c5874012fe6c77b958eae81d9
diff --git a/core/installer/values-tmpl/vaultwarden.cue b/core/installer/values-tmpl/vaultwarden.cue
index 69ac75f..7b68190 100644
--- a/core/installer/values-tmpl/vaultwarden.cue
+++ b/core/installer/values-tmpl/vaultwarden.cue
@@ -62,7 +62,7 @@
 		}
 	}
 
-	volumes: data: size: input.storageSize
+	volume: data: size: input.storageSize
 
 	helm: {
 		vaultwarden: {
@@ -75,7 +75,7 @@
 					pullPolicy: images.vaultwarden.pullPolicy
 				}
 				domain: _domain
-				persistentVolumeClaimName: volumes.data.name
+				persistentVolumeClaimName: volume.data.name
 				httpPortName: _httpPortName
 			}
 		}