docs: 191 create lumberjack 16 release notes (#197)

## PR Checklist

Please check if your PR fulfills the following requirements:

- [ ] The commit message follows our guidelines: CONTRIBUTING.md#commit
- [ ] Tests for the changes have been added (for bug fixes / features)
- [x] Docs have been added / updated (for bug fixes / features)

## PR Type

What kind of change does this PR introduce?

<!-- Please check the one that applies to this PR using "x". -->

```
[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[x] Documentation content changes
[ ] Other... Please describe:
```

Issue Number: #191 

## What is the new behavior?

We created a new blog post announcing Lumberjack 16 including our latest
improvements and changes.

## Does this PR introduce a breaking change?

```
[ ] Yes
[x] No
```

packages/docs/lumberjack-docs-app/blog/announcing-lumberjack-v16.md

@@ -0,0 +1,106 @@
+---
+title: 'Announcing Lumberjack v16: Life improvements, deprecations and an ambicius roadmap'
+description: Lumberjack v16 is here, and we are happy to share everything that's new.
+slug: announcing-lumberjack-v16
+authors:
+  - name: Nacho Vazquez
+    title: NgWorker and core maintainer of Lumberjack
+    url: https://github.com/NachoVazquez
+    image_url: https://github.com/NachoVazquez.png
+  - name: Lars Gyrup Brink Nielsen
+    title: NgWorker and core maintainer of Lumberjack
+    url: https://github.com/LayZeeDK
+    image_url: https://github.com/LayZeeDK.png
+tags: [announcement, lumberjack, v16]
+image: https://pub-2294738bc2c249ff8040505bf960c018.r2.dev/logo.svg
+hide_table_of_contents: false
+---
+
+We are back, bringing a new version of Lumberjack with deprecations, improvements, and a secret project.
+
+**TL;DR** - Lumberjack version 16 introduces the following updates: new level-based logging methods for the Lumberjack service, alignment with Angular 16.2, deprecation of all Lumberjack NgModules, and the introduction of a new spin-off project.
+
+## New level-based logging methods
+
+In our constant intent to improve the developer experience, we have introduced new level-based logging methods for the Lumberjack service.
+
+Previously, a single `log` method accepted a `LumberjackLog` object. This object contained the log message and the log level. We have now introduced a new method for each log level:
+
+Previous:
+
+```ts
+// (...)
+import { LumberjackService, LumberjackTimeService } from '@ngworker/lumberjack';
+
+// (...)
+export class MyComponent implements OnInit {
+  readonly #lumberjack = inject(LumberjackService);
+  readonly #time = inject(LumberjackTimeService);
+
+  // (...)
+  ngOnInit(): void {
+    this.#lumberjack.log({
+      level: LumberjackLevel.Info,
+      message: 'Hello, World!',
+      scope: 'MyComponent',
+      createdAt: this.#time.getUnixEpochTicks(),
+    });
+  }
+}
+```
+
+New:
+
+```ts
+// (...)
+import { LumberjackService, LumberjackTimeService } from '@ngworker/lumberjack';
+
+// (...)
+export class MyComponent implements OnInit {
+  readonly #lumberjack = inject(LumberjackService);
+  readonly #time = inject(LumberjackTimeService);
+
+  // (...)
+  ngOnInit(): void {
+    this.#lumberjack.logInfo('Hello, World!');
+  }
+}
+```
+
+This new API is courtesy of our new contributor, Pierre Bouillon. Thank you, Pierre!
+
+## NgModule deprecation
+
+At Lumberjack, we embrace the new standalone APIs as the best way to configure our libraries and applications. That's why we have decided to deprecate all Lumberjack NgModules.
+
+NgModules will be available until Lumberjack v18. After that, we will remove them from the library.
+
+As an additional benefit, after deleting the NgModules in version 18, we will receive a nice reduction in our bundle size.
+
+We remove all usage of NgModule in our internal codebase and are happy with the result. We hope you will be too.
+
+## Ambitious Secret Project
+
+Since version 15, we have been playing with an idea: what if we could create the best framework agnostic logging library? For that, we created a [PR (now closed)](https://github.com/ngworker/lumberjack/pull/154) where we experimented with extracting the agnostic API of Lumberjack. There are also a few discussions that you can read [here](https://github.com/ngworker/lumberjack/discussions/166) and [here](https://github.com/ngworker/lumberjack/discussions/183).
+
+However, we noticed that we were prisoners of our old API and wanted to try something new. That's why we decided to create a new spin-off project called LumberjackJS.
+
+We will offer more information when we are ready, but we are excited about the future of this project.
+
+The idea is to merge the two projects eventually and have a single library that can be used in any framework. But there is much work and experimentation to be done before that.
+
+## Community
+
+We are proud and thrilled to have [Pierre Bouillon](https://pbouillon.github.io) contributing to our project.
+
+## DEV
+
+Starting from this blog post, we will cross-post all our articles and release notes in our newly created [DEV organization](https://dev.to/lumberjack-js.)
+
+Please give it a follow.
+
+## Wrapping Up
+
+Our goal for 2024 is to keep updating Lumberjack at the same rate as Angular. That's why we will release very shortly Lumberjack v17 with Angular 17 support.
+
+The remaining of our efforts will be on improving the Lumberjack Developer experience and documentation. But the main chunk of our time will be spent on LumberjackJS.