feat: Optimize SEO and performance to achieve 100 PageSpeed score

[yogithesymbian]

What will change?

• Implemented meta tags for better SEO (title, description).
  

Learnings

Currently, if you paste your URL (e.g., https://yourdomain.com) into chat apps or social media, it only appears as plain text without any additional information. With these configurations, we can display a title and description, and achieve a perfect 100 score on Google PageSpeed Insights. Making these changes the default code would be an even better approach. Would you suggest adding it to the .env.example file or hardcoding it as done in this PR? If it looks good, feel free to merge! 😄

Security

Before you click Merge, take a step back and think how someone could break the Confidentiality, Integrity and Availability of the code you've just written. Are secrets secret? Is there any sensitive information disclosed in logs or error messages? How does your code ensure that information is accurate, complete and protected from modification? Will your code keep Contentful working and functioning?

[vercel]

@yogithesymbian is attempting to deploy a commit to the Contentful Apps Team on Vercel.

A member of the Team first needs to authorize it.

[andipaetzold]

Thanks for the PR and for bringing up this issue!
Your proposed changes are not quite enough as they are not dynamic for the individual blog post pages. I created another PR that always uses the current page's SEO fields: #204.

I close this PR as it's no longer needed.