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/compiler/src/ng_module_compiler.ts

@@ -6,12 +6,10 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {ɵNodeFlags as NodeFlags} from '@angular/core';
-
 import {CompileNgModuleMetadata, CompileProviderMetadata, identifierName} from './compile_metadata';
 import {CompileReflector} from './compile_reflector';
+import {NodeFlags} from './core';
 import {Identifiers} from './identifiers';
-import {CompilerInjectable} from './injectable';
 import * as o from './output/output_ast';
 import {typeSourceSpan} from './parse_util';
 import {NgModuleProviderAnalyzer} from './provider_analyzer';
@@ -24,7 +22,6 @@ export class NgModuleCompileResult {
 
 const LOG_VAR = o.variable('_l');
 
-@CompilerInjectable()
 export class NgModuleCompiler {
   constructor(private reflector: CompileReflector) {}
   compile(