feat(core): add contributing file and verif

CONTRIBUTING.README.md

@@ -0,0 +1,41 @@
+<!-- TODO: add title of your exercice -->
+<h1>{Title of your exercice}</h1>
+
+<!-- TODO: Add your name -->
+
+> Author: {Your name}
+
+<!-- TODO: add Information/Statement/Rules/Constraint/Steps -->
+
+### Information
+
+### Statement
+
+### Step 1
+
+### Step 2
+
+### Constraints:
+
+### Submitting your work
+
+1. Fork the project
+2. clone it
+3. npm install
+<!-- TODO: add you project app name directory -->
+4. **nx serve {{project app name}}**
+5. _...work on it_
+6. Commit your work
+<!-- TODO: add your challenge number -->
+7. Submit a PR with a title beginning with **Answer:{challenge number}** that I will review and other dev can review.
+
+<!-- TODO: add challenge number and project Name -->
+
+<a href="https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A{challenge number}+label%3Aanswer"><img src="https://img.shields.io/badge/-Solutions-green" alt="{Project name}"/></a>
+
+<!-- TODO: uncomment when done late -->
+<!-- <a href='https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A{challenge number}+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="{Project name} solution author"/></a>
+<a href="{Blog post url}" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="{Project name} blog article"/></a> -->
+
+<!-- TODO: you can add your twitter or anything else if you wish -->
+<!-- _You can ask any question on_ <a href="https://twitter.com/laforge_toma" target="_blank" rel="noopener noreferrer"><img src="./../../logo/twitter.svg" height=20px alt="twitter"/></a> -->