fix(@ngtools/webpack): log ngcc compilation messages

Fix #14194

Author: filipesilva

packages/ngtools/webpack/src/ngcc_processor.ts

@@ -104,6 +104,7 @@ export class NgccProcessor {
 }
 
 class NgccLogger implements Logger {
+  private alreadyProcessMsg = 'The target entry-point has already been processed';
   constructor(
     private readonly compilationWarnings: (Error | string)[],
     private readonly compilationErrors: (Error | string)[],
@@ -112,7 +113,12 @@ class NgccLogger implements Logger {
 
   debug(..._args: string[]) { }
 
-  info(..._args: string[]) { }
+  info(..._args: string[]) {
+    const msg = _args.join(' ');
+    if (!msg.includes(this.alreadyProcessMsg)) {
+      process.stderr.write(`\n${msg}\n`);
+    }
+  }
 
   warn(...args: string[]) {
     this.compilationWarnings.push(args.join(' '));