refactor(compiler): split compiler and core (#18683)

After this, neither @angular/compiler nor @angular/comnpiler-cli depend
on @angular/core.

This add a duplication of some interfaces and enums which is stored
in @angular/compiler/src/core.ts

BREAKING CHANGE:
- `@angular/platform-server` now additionally depends on
  `@angular/platform-browser-dynamic` as a peer dependency.


PR Close #18683

packages/core/src/change_detection/constants.ts

@@ -16,12 +16,12 @@ export enum ChangeDetectionStrategy {
   /**
    * `OnPush` means that the change detector's mode will be set to `CheckOnce` during hydration.
    */
-  OnPush,
+  OnPush = 0,
 
   /**
    * `Default` means that the change detector's mode will be set to `CheckAlways` during hydration.
    */
-  Default,
+  Default = 1,
 }
 
 /**