refactor(compiler): move static_reflector into @angular/compiler and rename files

- `src/runtime_compiler.ts` -> `src/jit/compiler.ts`
- `src/compiler.ts` -> `src/jit/compiler_factory.ts`
- `src/offline_compiler` -> `src/aot/compiler.ts`

Part of #12867

modules/@angular/compiler/src/compile_metadata.ts

@@ -718,15 +718,6 @@ function _normalizeArray(obj: any[]): any[] {
   return obj || [];
 }
 
-export function isStaticSymbol(value: any): value is StaticSymbol {
-  return typeof value === 'object' && value !== null && value['name'] && value['filePath'];
-}
-
-export interface StaticSymbol {
-  name: string;
-  filePath: string;
-}
-
 export class ProviderMeta {
   token: any;
   useClass: Type<any>;