cue modules: move stdlib to pkg/alpha.dagger.io

In preparation for Europa, we will vendor multiple CUE modules:

- `pkg/alpha.dagger.io`: legacy non-europa packages
- `pkg/dagger.io`: core Europa packages
- `pkg/universe.dagger.io`: Europa universe

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

pkg/alpha.dagger.io/.dagger/env/aws-s3/values.yaml

@@ -0,0 +1,31 @@
+plan:
+    package: ./aws/s3/tests
+name: aws-s3
+inputs:
+    TestConfig.awsConfig.accessKey:
+        secret: ENC[AES256_GCM,data:iu6LfQNgGZUVnHVeMRYPrcBtlZk=,iv:U5PLxDKXwJnUDdk1ayFGvvJfWdVqh1PK5ujb20YYPP0=,tag:QyqIJRiR6nE16ZDV0CP7Pw==,type:str]
+    TestConfig.awsConfig.secretKey:
+        secret: ENC[AES256_GCM,data:Q/W+KH3NEouGt6C5S+KiC43837soYi2Mjb/z5K8rD9gtaNaBjjkJHg==,iv:8nGEzLXd91rF5YBZ/EdQoMN27yrpc0sgm26DEvIuSHM=,tag:/oyKl/vj5MJAm+jZMOOAuQ==,type:str]
+    TestDirectory:
+        dir:
+            path: ./aws/s3/tests/testdata
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age1gxwmtwahzwdmrskhf90ppwlnze30lgpm056kuesrxzeuyclrwvpsupwtpk
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBKeEk5MS9nVmFoOVNNOHdE
+            WnZCTXBWbW9LL1NJYndCYjhIM2JsNXNEUmxJCkUya0dlZjZ0dGRIM1pVdzg5eWFH
+            MVpiaE9PclNudGdUZm5FcytuVDZGTDAKLS0tIEQxWDdteHgzS3JkdmtNTVpxMUh1
+            aXlvVWJVSGNTSkVyYmpZbi9nUVJZdmMK6csXZ2RMxFw5DB+Hb2TyhyoZT8c2/z7Y
+            Lc9Pe8gb8aUq5Ha+wCybYvY6JWEM5A9XYJKbE7f4borTfGKS72d6pw==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2021-07-08T09:52:36Z"
+    mac: ENC[AES256_GCM,data:mG8lpyCdgS5b5+VkKv1gWiT9m7k3ZxR36F8TMSkuxHAsrcPiQn+aeHyytEcioYMRQ/M18Fw60mElrTMFgVxncYY40HAPD+EcD6e3CPHXuHaX+fLFUl7rBxuJD2ugRSWgsf5TXP1z3zzuWjrGg6AnIe88PSRiR7NQH3uQ59K7duQ=,iv:QfTF89KCeaFMQbUQcQRZvf6QVmQ63Q14x8LeBqfzGOw=,tag:2KUepl7xXlIvdYlxzhtv2Q==,type:str]
+    pgp: []
+    encrypted_suffix: secret
+    version: 3.7.1