docs: Move `Bun` to the first place in tabs on Installation page

[PatrykKuniczak]

Feature Request

On Installation page sections with that tab:

Let's move Bun to the very left hand side, to let it be Default, because we've migrated a little to that manager and we're on the way to migrate completely.

[PatrykKuniczak]

@BlazerYoo Maybe you're interested?

[InvictusNavarchus]

Good idea. Actually, I kind of annoyed that most websites don't even list bun at all there.

[BlazerYoo]

@BlazerYoo Maybe you're interested?

Looks like @ded-furby beat me to it?

[PatrykKuniczak]

@BlazerYoo Yeah