ci: add npm badges

Author: cavalieredavide

README.md

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 # DataKitchen's front end monorepo
 ![CI build status](https://github.com/DataKitchen/ngx-toolkit/actions/workflows/main.yml/badge.svg)
 
+
 Welcome to the DataKitchen `ngx-toolkit` monorepo! This repository houses a collection of libraries developed by our Front End team to address common tasks that Angular developers encounter on a daily basis. These libraries are split into <!-- three --> two npm packages:
   - @datakitchen/ngx-toolkit
   > Provides solutions and best practices for implementing and synchronizing various features, including search inputs, pagination, and persistence using localStorage or query parameters. Also contains mocking utilities, a simplified version of Angular's typed reactive forms, and other small utilities that any Angular developer may need. See [ngx-toolkit's readme](https://github.com/DataKitchen/ngx-toolkit/blob/master/projects/core/README.md)

projects/core/README.md

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 # Datakitchen's ngx-toolkit :rocket:
+[![@datakitchen/ngx-toolkit](https://badge.fury.io/js/@datakitchen%2Fngx-toolkit.svg)](https://badge.fury.io/js/@datakitchen%2Fngx-toolkit)
+
 
 This library contains a collection of utilities for Angular applications. There are three categories of utilities:
  - General utilities such as a `@Memoize` decorator and a wrapper around the browser `localStorage`.

projects/ngx-monaco-editor/README.md

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 # @datakitchen/ngx-monaco-editor
+[![@datakitchen/ngx-monaco-editor](https://badge.fury.io/js/@datakitchen%2Fngx-monaco-editor.svg)](https://badge.fury.io/js/@datakitchen%2Fngx-monaco-editor)
 
 [Microsoft's Monaco editor](https://microsoft.github.io/monaco-editor/) wrapper for Angular.
 > Material forms version!