Revamp website video page

[akeller]

Describe what's missing in our docs

• https://www.notion.so/kestra-io/Video-Page-on-Website-31036907f7b58040b1b2d64b50e1b7f9?source=copy_link
• https://www.notion.so/kestra-io/Events-Landing-Page-31f36907f7b58005bbb1ea2f7c7f1352?source=copy_link

We're shifting the page to more of an overall events (online and offline) landing page, showcasing videos and events from YouTube, Contrast, etc. People would be able to view or register for upcoming events and filter for on-demand videos.