Events improvements

[atinux]

I think we should clearly see a timeline with the upcoming and past events (sorting by recent first)

I would choose the same layout as https://nuxtjs.org/modules/ but for the filters label on the left, I can see the Month + Year:
Ex:

• November
• October
• May
• ...
• Sep 2020,
• August 2020,
• ...

We shall group the events per month, this way we can display them with a title (with an anchor like in docs) so clicking on the filter will simply scroll, I think it's much better for UX as it does not change the height of the window (we may apply this same logic to the modules section and others), kind of like https://vercel.com/integrations but with the sidebar fixed 👀

It would be nice also to include Podcasts, maybe we can think of a type: audio or type: video, this way we may be able to display an icon next to it.

[atinux]

Updated the description after discussing with @Dawntraoz on #1785