feat(core,platform): update angular 15 and nx to v15

[N1XUS]

BREAKING CHANGE:

• Updated @angular library to v15;
• Updated nx library to v15;
• Updated other third-party libraries to latest version;
• Applied necessary migrations;
• Adjusted unit tests;
• For projects without unit tests angular failed karma execution with error that no tests were found, so filler test (dummy) was added to such projects;
• Build target now ES2022
• RouterLinkWithHref is now deprecated and removed from @fundamental-ngx/core/link.
• Value help dialog data provider generic type should be extended from object.

Before:

class ExampleVhdDataProvider<T> extends VhdDataProvider<T> {
    fetch(params: Map<string, string>): Observable<T[]> {
        return super.fetch(params).pipe(delay(300));
    }
}

Now:

class ExampleVhdDataProvider<T extends object> extends VhdDataProvider<T> {
    fetch(params: Map<string, string>): Observable<T[]> {
        return super.fetch(params).pipe(delay(300));
    }
}

[netlify]

✅ Deploy Preview for fundamental-ngx ready!

Name	Link
🔨 Latest commit	96bc1c1
🔍 Latest deploy log	https://app.netlify.com/sites/fundamental-ngx/deploys/639494b6a90ede0008f43d67
😎 Deploy Preview	https://deploy-preview-9056--fundamental-ngx.netlify.app/docs/fn/input/examples/input-form-group-example.component
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[github-actions]

Visit the preview URL for this PR (updated for commit 96bc1c1):

https://fundamental-ngx-gh--pr9056-chore-v15-10lpltvu.web.app

_{(expires Tue, 13 Dec 2022 14:23:04 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 41b993ee8e451bd7c6770b342ce142dc886eacff}

[platon-rov]

I don't see any major changes, approving.

Please fix pipeline.