Track and display introduction version for Deno Runtime APIs

[outslept]

Add per-API version metadata and surface it in the docs as small chips. Examples how this could look like:

• "Added in vX.Y"

• "Stable since vX.Y"

• Deprecated in vX.Y

etc (basically something similar to what node already does).

P.S. I searched the issue tracker but couldn’t find an existing issue for this. apologies if I missed it and this is a duplicate