Feature/subcontainers (#2720)

* wip: subcontainers

* wip: subcontainer infra

* rename NonDestroyableOverlay to SubContainerHandle

* chore: Changes to the container and other things

* wip:

* wip: fixes

* fix launch & exec

Co-authored-by: Jade <Blu-J@users.noreply.github.com>

* tweak apis

* misc fixes

* don't treat sigterm as error

* handle health check set during starting

---------

Co-authored-by: J H <dragondef@gmail.com>
Co-authored-by: Jade <Blu-J@users.noreply.github.com>

sdk/lib/types.ts

@@ -25,6 +25,7 @@ import { Daemons } from "./mainFn/Daemons"
 import { StorePath } from "./store/PathBuilder"
 import { ExposedStorePaths } from "./store/setupExposeStore"
 import { UrlString } from "./util/getServiceInterface"
+import { StringObject, ToKebab } from "./util"
 export * from "./osBindings"
 export { SDKManifest } from "./manifest/ManifestTypes"
 export { HealthReceipt } from "./health/HealthReceipt"
@@ -286,6 +287,16 @@ export type PropertiesReturn = {
   [key: string]: PropertiesValue
 }
 
+export type EffectMethod<T extends StringObject = Effects> = {
+  [K in keyof T]-?: K extends string
+    ? T[K] extends Function
+      ? ToKebab<K>
+      : T[K] extends StringObject
+        ? `${ToKebab<K>}.${EffectMethod<T[K]>}`
+        : never
+    : never
+}[keyof T]
+
 /** Used to reach out from the pure js runtime */
 export type Effects = {
   // action
@@ -352,12 +363,13 @@ export type Effects = {
   /** sets the result of a health check */
   setHealth(o: SetHealth): Promise<void>
 
-  // image
-
-  /** A low level api used by Overlay */
-  createOverlayedImage(options: { imageId: string }): Promise<[string, string]>
-  /** A low level api used by Overlay */
-  destroyOverlayedImage(options: { guid: string }): Promise<void>
+  // subcontainer
+  subcontainer: {
+    /** A low level api used by SubContainer */
+    createFs(options: { imageId: string }): Promise<[string, string]>
+    /** A low level api used by SubContainer */
+    destroyFs(options: { guid: string }): Promise<void>
+  }
 
   // net