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

.github/ISSUE_TEMPLATE/05-project-contribution.yml

@@ -0,0 +1,35 @@
+name: "🙏 ​ ​Submit a Project Idea"
+description: Help us add project ideas to roadmaps.
+labels: [project contribution]
+assignees: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to submit a project idea! Please fill out the information below and we'll get back to you as soon as we can.
+  - type: input
+    id: roadmap-title
+    attributes:
+      label: What Roadmap is this project for?
+      placeholder: e.g. Backend Roadmap
+    validations:
+      required: true
+  - type: select
+    id: project-difficulty
+    attributes:
+      label: Project Difficulty
+      options:
+        - Beginner
+        - Intermediate
+        - Advanced
+    validations:
+      required: true
+  - type: textarea
+    id: roadmap-description
+    attributes:
+      label: Add Project Details
+      description: Please write a detailed description of the project in 3rd person e.g. "You are required to build a..."
+      placeholder: |
+          e.g. You are required to build a RESTful API...
+    validations:
+      required: true