feat: Blog List Page Design

[asthabh23]

Description

This PR introduces Blog List Page for listing the blog posts on AEM live documentation

Related Issue

#735

Motivation and Context

Currently there isn't any parent or home page for listing blogs.
The blog listing page will be a central place to link all blog posts present on the aem.live website.

How Has This Been Tested?

https://main--helix-website--adobe.aem.page/drafts/asthabharga/blog-test
vs
https://issue-733--helix-website--adobe.aem.page/drafts/asthabharga/blog-test

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
In case there are problems, just click a checkbox below to rerun the respective action.

• Re-run PSI checks
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Commits

• a88d81b ✅ (latest)
• d0996c2 ✅
• 5e0e854 ✅
• df6edc5 ✅

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/drafts/asthabharga/blog-test
🖥️	/drafts/asthabharga/blog-test