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/kubernetes-kustomize/values.yaml

@@ -0,0 +1,27 @@
+plan:
+    package: ./kubernetes/kustomize/tests
+name: kubernetes-kustomize
+inputs:
+    TestKustomize.testdata:
+        dir:
+            path: ./kubernetes/kustomize/tests/testdata
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age1gxwmtwahzwdmrskhf90ppwlnze30lgpm056kuesrxzeuyclrwvpsupwtpk
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBTL2Jyczk3QXZiUVkyd3cw
+            TlYzQ2NyR2ZGZnhSRmowSGRmbFBodFRPc2dnCnJpYjdCdUpEUE10d3I4clh1eDVV
+            MmVqbmxiNmRvSUNqZEY3clZnci9pRkkKLS0tIGVLSVFwTy9TSElFUkdjOVlWb3Yy
+            OFllMEh3cVJZZnFxbW4xS1RtcFQzcFUKo/1WcYp4nPBXba8wQBe3DMt6pYQJGoSu
+            ja5BiCffN5wOoW9WT0j8Clx21w7BXcl46+T5GYpXDQDcqf6nCv1kYQ==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2021-07-08T09:56:13Z"
+    mac: ENC[AES256_GCM,data:3Y62uoofDyzVwzmOqvdO08rVoGyXOSQnE4CXrVCi+DsoyaWAEi2BhzWc1yk/giYnwedZtMDGnmCHS1abirbVzPJShQbPqgHvh0Wp7RlJCnnYAPLpE/VGPvMb1qHv24yKMr+YKM6kA5q7tRlC9LZQ5tjv2bd5ZnBH7WRoA9RUIQk=,iv:S2KOS6ntLxKdbkvK5yM1YwvCSF+I/bbqUI22uMSKLMg=,tag:QxXjIfo7DPZyPr+5X9bChQ==,type:str]
+    pgp: []
+    encrypted_suffix: secret
+    version: 3.7.1