stdlib: move core definitions to engine package

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

docs/reference/README.md

@@ -15,6 +15,7 @@
 - [azure/staticwebapp](./azure/staticwebapp.md) - -
 - [azure/storage](./azure/storage.md) - -
 - [dagger](./dagger/README.md) - Dagger core types
+- [dagger/engine](./dagger/engine.md) - -
 - [dagger/op](./dagger/op.md) - op: low-level operations for Dagger processing pipelines
 - [docker](./docker/README.md) - Docker container operations
 - [docker/compose](./docker/compose.md) - Docker-compose operations

docs/reference/dagger/README.md

@@ -10,40 +10,6 @@ Dagger core types
 import "alpha.dagger.io/dagger"
 ```
 
-## dagger.#Context
-
-### dagger.#Context Inputs
-
-_No input._
-
-### dagger.#Context 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.
@@ -56,18 +22,6 @@ _No input._
 
 _No output._
 
-## dagger.#Service
-
-A reference to a network service endpoint, for example:  - A TCP or UDP port  - A unix or npipe socket  - An HTTPS endpoint
-
-### dagger.#Service Inputs
-
-_No input._
-
-### dagger.#Service Outputs
-
-_No output._
-
 ## dagger.#Stream
 
 Dagger stream. Can be mounted as a UNIX socket.