Merge dagger.io/dagger/engine into dagger.io/dagger

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

tests/tasks/scratch/scratch.cue

@@ -1,20 +1,20 @@
 package main
 
 import (
-	"dagger.io/dagger/engine"
+	"dagger.io/dagger"
 )
 
-engine.#Plan & {
+dagger.#Plan & {
 	actions: {
-		image: engine.#Pull & {
+		image: dagger.#Pull & {
 			source: "alpine:3.15.0@sha256:e7d88de73db3d3fd9b2d63aa7f447a10fd0220b7cbf39803c803f2af9ba256b3"
 		}
 
-		exec: engine.#Exec & {
+		exec: dagger.#Exec & {
 			input: image.output
 			mounts: fs: {
 				dest:     "/scratch"
-				contents: engine.#Scratch
+				contents: dagger.#Scratch
 			}
 			workdir: "/"
 			args: [

tests/tasks/scratch/scratch_build_scratch.cue

@@ -1,14 +1,14 @@
 package main
 
 import (
-	"dagger.io/dagger/engine"
+	"dagger.io/dagger"
 )
 
-engine.#Plan & {
-	actions: build: engine.#Build & {
-		source: engine.#Scratch
+dagger.#Plan & {
+	actions: build: dagger.#Build & {
+		source: dagger.#Scratch
 		dockerfile: contents: "FROM scratch"
-		// Assert that output is engine.#Scratch
-		output: engine.#Scratch
+		// Assert that output is dagger.#Scratch
+		output: dagger.#Scratch
 	}
 }

tests/tasks/scratch/scratch_writefile.cue

@@ -1,18 +1,18 @@
 package main
 
 import (
-	"dagger.io/dagger/engine"
+	"dagger.io/dagger"
 )
 
-engine.#Plan & {
+dagger.#Plan & {
 	actions: {
-		write: engine.#WriteFile & {
-			input:       engine.#Scratch
+		write: dagger.#WriteFile & {
+			input:       dagger.#Scratch
 			path:        "/testing"
 			contents:    "1,2,3"
 			permissions: 700
 		}
-		readfile: engine.#ReadFile & {
+		readfile: dagger.#ReadFile & {
 			input: write.output
 			path:  "/testing"
 		} & {