Add introduction page for Serving in getting started / quickstart

[abrennan89]

Currently only Eventing has a page like this: https://knative.dev/docs/getting-started/getting-started-eventing/

Serving goes straight into creating a service without providing the same sort of introduction.

Describe the change you'd like to see

Add a page similar to this for Serving.

OR

Should we reconsider having this info in the tutorial at all, and instead point out to the overview docs (e.g. https://knative.dev/docs/serving/) for conceptual information? Either way this should be equal and consistent for both components, i.e. either both should have an overview page as well as an intro / concepts page in the tutorial, or neither should have a conceptual page like this in the tutorial and all that info should be in the overview which we point out to instead.

[AmanSarraf]

I'd like to take this one /assign

[rolfedh]

I'm coaching @AmanSarraf a bit on the Kubernetes localization project for Hindi. Kindly let me know if I can help out with anything.

[AmanSarraf]

I added a getting-started-serving page,

I want to add the footer like other pages with the next and previous topics listed and also how to link this standalone page with others @abrennan89

[abrennan89]

@AmanSarraf AFAIK they should be added by default - can you open a PR with the changes and link it to this issue so I can take a look?

[abrennan89]

I think this issue is sort of obsolete now, since we're revisiting how we do the quickstart and tutorials in general, in light of conversations on Slack and the addition of Functions.