refactor(ivy): move the expr/stmt translator to a separate target (#26203)

Template type-checking will make use of expression and statement
translation as well as the ImportManager, so this code needs to
live in a separate build target which can be depended on by both
the main ngtsc transform as well as the template type-checking
mechanism. This refactor introduces a separate build target
for that code.

PR Close #26203

packages/compiler-cli/src/ngtsc/transform/index.ts

@@ -10,4 +10,3 @@ export * from './src/api';
 export {IvyCompilation} from './src/compilation';
 export {DtsFileTransformer} from './src/declaration';
 export {ivyTransformFactory} from './src/transform';
-export {ImportManager, translateStatement} from './src/translator';