[WIK-74] [FEATURE] [BACKEND] Wikonnect submission as an oEmbed provider

[0xMurage]

Describe the user story:

To enable Wikonnect to captivate a greater audience, existing & new content should be easy to embed on third-party sites. Additionally, Wikonnect should be discoverable as an oEmbed rich media provider to any interested consumer.

Tasks (where applicable)

• Ensure the embed API endpoint response conforms with oEmbed format.
• Add referrer to the HTML iframe embed endpoint response property
• Inject oEmbed content headers on each chapter page
• Ensure the content is crawlable.
• Request to be Embedly Provider here
• Create pull request to be a provider here

Tests (where applicable)

• Passing of oEmbed endpoint on Embed.ly page
• oEmbed headers automatically and correctly injected on each chapter page

Acceptance Criteria

• /api/v1/oembed should return valid oEmbed response on error and on success

Screenshots where applicable

[brianmarete]

@mimidotsuser Has this issue been resolved?

[0xMurage]

@brianmarete I have checked off the completed tasks.
Submission as an oEmbed provider via Embed.ly was not done since the platform content is not crawlable at the moment. ( as per Embed.ly Requirements )
Crawling of the content was to be done under the Fastboot ticket. The ticket was shelved to address other higher-priority tickets.