enhanced container list

Container list has now options for full, kernel and size listing. Without any
arguments only available containers are listed. Size is no more fine granular
showing also size of the image, chroot and compressed image

Signed-off-by: Christian Goll <cgoll@suse.com>

internal/pkg/api/routes/v1/routes.proto

@@ -59,6 +59,8 @@ message ContainerInfo {
 	uint64 createDate = 4; // creation date in unix time
 	uint64 modDate = 5; // date of last modification in unix time
 	uint64 size = 6; // size of chroot and images in bytes
+	uint64 imgSize = 7;
+	uint64 imgSizeComp = 8;
 }
 
 // ContainerListResponse has all information that ContainerList provides.