feat: generate sitemap.xml for SEO indexing

[ShubhamOulkar]

closes #1762

how to test sitemap.xml?

1. Visit hreflang tool
2. Test url 👉🏻 https://deploy-preview-1838--expressjscom-preview.netlify.app/sitemap.xml

test results from tool

1. Warning ⚠ Missing region independent link for Portuguese(pt), Chinese(zh)
2. total 561 url's added in sitemap.xml with hreflang tags (17 languages).

Issue

The website contains inconsistent file formats in its changelog directory, resulting in incorrect alternate URLs generated in the sitemap.xml. Specifically, the following formats are observed: ko/changelog/4x.md, tr/changelog/4x.md, uk/CHANGELOG.md

verify issue

When selecting Korean (ko) as the language on the changelog page, the website returns a "Page Not Found" error due to the presence of 4x.md, which seems to be an incorrect file format in this context.

Note: Now I removed all changelog pages from sitemap and manually added only en/changelog/index.md to ensure SEO.

Edit:- This code generates 561 URLs for 17 languages including redirects. This will increase jekyll build time. Some of the languages are removed from translations.

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[ShubhamOulkar]

Should we consider adding urls for YouTube video and images used on website?

[bjohansebas]

Should we consider adding urls for YouTube video and images used on website?

Yep, images are a good idea if the tags can be generated automatically like with the pages. If we have to maintain that list of images manually, it's preferably better not to add them.

YouTube videos, no, it would be something manual to maintain.

[ShubhamOulkar]

Yep, images are a good idea if the tags can be generated automatically like with the pages. If we have to maintain that list of images manually, it's preferably better not to add them.

YouTube videos, no, it would be something manual to maintain.

I am okay with adding them in future updates as the website progresses.

[bjohansebas]

Why are you blocking it? That label is to prevent merging it because it depends on another change elsewhere (for example, in another repository).

But I don't understand it here, why are you adding it?

We cannot merge until there is an approval from someone with commit access, so it is not necessary to block it.

[ShubhamOulkar]

Why are you blocking it? That label is to prevent merging it because it depends on another change elsewhere (for example, in another repository).

Sorry I didn't put message there. I think it is best to do this after translation and fixing layout issues. Right now I am prioritizing layout issues.

[bjohansebas]

LGTM

[bjohansebas]

@ShubhamOulkar the description says not to merge, do you prefer to wait a bit before removing some languages, or go ahead anyway?

[ShubhamOulkar]

Lets move on 👍