Add blog infra

[ryyppy]

Before merging:

Documentation:

• [X] How to add a blog post
• [X] How to verify if it's rendering correctly
• [X] Explain available frontmatter attributes
• [X] Update landing page content

Tests:

• [X] Make sure blogposts will be checked by the test-href script

[believer]

Hey @ryyppy thanks for this awesome effort! :smile: I saw that you've put together a custom date solution and came to think of a solution I've been using in some projects. It leverages the browser's built-in Intl.DateTimeFormat. It's supported by all major browsers and IE11 and might also be great for any future translations of the docs.

Code: Playground

MDN Documentation

[ryyppy]

@believer oh wow that's pretty rad! do you polyfill it for older browsers as well?

[believer]

@ryyppy we only support IE11 and forward, so we don't use a polyfill!