404 improve error messages (#444)

* feat: 🎸 add as_response() method to exceptions

the 400 errors have more details

* feat: 🎸 remove dependency to libutils

* feat: 🎸 remove dependency to libutils

* feat: 🎸 update libs

now: libutils, libcache and libqueue are independent

* feat: 🎸 make some fields of 400 error response optional

* fix: 🐛 catch server errors and return a Status500Error

✅ Closes: #436

* feat: 🎸 depend on libutils again

duplicating the definitions generated incompatibilites. We depend on
libutils until we remove /splits and /rows

* feat: 🎸 depend again libcache on libutils

* refactor: 💡 use the new ethods

* feat: 🎸 improve the error messages

✅ Closes: #404

* fix: 🐛 manage when num_bytes or num_examples don't exist

* feat: 🎸 update docker images

infra/charts/datasets-server/docker-images.yaml

@@ -1,13 +1,13 @@
 {
   "dockerImage": {
-    "admin": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-admin:sha-9e66a36",
-    "api": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-api:sha-c05b21f",
+    "admin": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-admin:sha-b9b0a95",
+    "api": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-api:sha-b9b0a95",
     "reverseProxy": "docker.io/nginx:1.20",
     "worker": {
-      "datasets": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-2043e54",
-      "firstRows": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-2043e54",
-      "splits": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-2043e54",
-      "splitsNext": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-2043e54"
+      "datasets": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-52a3066",
+      "firstRows": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-52a3066",
+      "splits": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-52a3066",
+      "splitsNext": "707930574880.dkr.ecr.us-east-1.amazonaws.com/hub-datasets-server-worker:sha-52a3066"
     }
   }  
 }