[Site]: support structured schema (JSON-LD)

[juzhiyuan]

Current State

Description of the current state/issue: For each page under the Apache APISIX Website, we don't provide a structured schema for search engines, so the search engine has to try to understand each page's content meaning. Structured Schema is an Advanced SEO solution, please refer to the following links for more information.

1. https://moz.com/blog/json-ld-for-beginners
2. https://developers.google.com/search/docs/advanced/structured-data/intro-structured-data
3. https://stackoverflow.com/questions/38670851/whats-a-script-type-application-ldjsonjsonobj-script-in-a-head-sec/38745339#38745339
4. https://support.google.com/knowledgepanel/answer/9163198?hl=zh-Hans&ref_topic=9164489
5. https://developers.google.com/search/docs/advanced/guidelines/get-started

Desired State

Validator Tools: https://validator.schema.org/

[SkyeYoung]

If we need a good type prompt, we can use https://www.npmjs.com/package/schema-dts.

[nfrankel]

I'm interested to contribute on this one. It can be a quick win.

[juzhiyuan]

Hi, Nicolas, Thanks!!

[nfrankel]

I've checked in more detail and it's not as quick a win as I thought.

The number of items is pretty limited. I believe we can use How-To and Article quite easily. Others, such as Learning Video and Software App are a bit harder to push in.

Hence, I think I could start with one article from the blog and see what I can make out of it.

[pottekkat]

@juzhiyuan @nfrankel @SkyeYoung we have to work on this to improve discoverability in Google. From experience, adding schema to the site can help in getting a "Knowledge Panel" in Google search. @SkyeYoung With your help, I can probably look into what we can do and take this forward.

[nfrankel]

Yes, I wanted to work on that months ago... and did nothing. Feel free to own it