feat: add projects functionality for backend roadmap (#6412)

* Add empty projects listing and cards

* Projects page header

* Projects listing and filtering

* Add project detail page

* Add a task tracker CLI project

* UI changes

* Add projects for expense and task tracker

* Add new projects

* Add blogging platform API project

* Project page UI changes

* Add todo list api project

* Add todo list api project

* Add a project idea for weather service

* Add expense tracker API project

* Add more details to expense tracker

* Add markdown note taking app idea

* Add URL shortener service project

* Add broadcast server project

* Add ecommerce project idea

* Add project on other roadmaps

* Add workout tracker project

* Add image processing project idea

* Add movie reservation system ap

* Add movie reservation system project

* Add realtime leader board system project

* Add details for a database backup utility

* Add project contribution docs

* Fix UI of the discover page

contributing.md

@@ -4,6 +4,7 @@ First of all thank you for considering to contribute. Please look at the details
 
 - [New Roadmaps](#new-roadmaps)
 - [Existing Roadmaps](#existing-roadmaps)
+- [Adding Projects](#adding-projects)
 - [Adding Content](#adding-content)
 - [Guidelines](#guidelines)
 
@@ -22,6 +23,10 @@ For the existing roadmaps, please follow the details listed for the nature of co
 
 **Note:** Please note that our goal is <strong>not to have the biggest list of items</strong>. Our goal is to list items or skills most relevant today.
 
+## Adding Projects
+
+If you have a project idea that you think we should add to the roadmap, feel fre to open an issue with as much details about the project as possible and the roadmap you think it should be added to.
+
 ## Adding Content
 
 Find [the content directory inside the relevant roadmap](https://github.com/kamranahmedse/developer-roadmap/tree/master/src/data/roadmaps). Please keep the following guidelines in mind when submitting content: