Editor’s note: Get this free weekly recap of TechCrunch news that any startup can use by email every Saturday morning (7 a.m. PT). Subscribe here. The wait was long but this week the time was right: Airbnb finally filed its S-1 and so did Affirm, C3.ai, Roblox, and Wish. We are likely to see these five price on public markets before the end of an already superlative year for tech IPOs. The ongoing pandemic and political turmoil were not scary enough, apparently. This coming decade, you have to think that we’ll see…