Europa: integrate core packages, separate universe

Signed-off-by: Solomon Hykes <solomon@dagger.io>

docs/reference/europa/dagger/README.md

@@ -0,0 +1,95 @@
+---
+sidebar_label: dagger
+---
+
+# alpha.dagger.io/europa/dagger
+
+The Dagger API.
+
+```cue
+import "alpha.dagger.io/europa/dagger"
+```
+
+## dagger.#DAG
+
+A special kind of program which `dagger` can execute.
+
+### dagger.#DAG Inputs
+
+_No input._
+
+### dagger.#DAG Outputs
+
+_No output._
+
+## dagger.#FS
+
+A reference to a filesystem tree. For example:  - The root filesystem of a container  - A source code repository  - A directory containing binary artifacts Rule of thumb: if it fits in a tar archive, it fits in a #FS.
+
+### dagger.#FS Inputs
+
+_No input._
+
+### dagger.#FS Outputs
+
+_No output._
+
+## dagger.#Plan
+
+A deployment plan executed by `dagger up`
+
+### dagger.#Plan Inputs
+
+_No input._
+
+### dagger.#Plan Outputs
+
+_No output._
+
+## dagger.#Secret
+
+A reference to an external secret, for example:  - A password  - A SSH private key  - An API token Secrets are never merged in the Cue tree. They can only be used by a special filesystem mount designed to minimize leak risk.
+
+### dagger.#Secret Inputs
+
+_No input._
+
+### dagger.#Secret Outputs
+
+_No output._
+
+## dagger.#Service
+
+A reference to a network service endpoint, for example:  - A TCP or UDP port  - A unix socket  - An HTTPS endpoint
+
+### dagger.#Service Inputs
+
+_No input._
+
+### dagger.#Service Outputs
+
+_No output._
+
+## dagger.#Stream
+
+A reference to a stream of bytes, for example:  - The standard output or error stream of a command  - The standard input stream of a command  - The contents of a file or named pipe
+
+### dagger.#Stream Inputs
+
+_No input._
+
+### dagger.#Stream Outputs
+
+_No output._
+
+## dagger.#Subdir
+
+Select a subdirectory from a filesystem tree
+
+### dagger.#Subdir Inputs
+
+_No input._
+
+### dagger.#Subdir Outputs
+
+_No output._