[Neue] Parallel font loading on web (#5411)

* Parallel font loading

(cherry picked from commit 10e2b05b575bbbf8b0ca5b4a336817cd902d712b)

* Handle failures

* Rely on font-face and preload tags for font loading (#5431)

* Cache fonts for a year

bskyweb/cmd/bskyweb/server.go

@@ -210,6 +210,11 @@ func serve(cctx *cli.Context) error {
 				maxAge = 7 * (60 * 60 * 24) // 1 week
 			}
 
+			// fonts can be cached for a year
+			if strings.HasSuffix(path, ".otf") {
+				maxAge = 365 * (60 * 60 * 24) // 1 year
+			}
+
 			c.Response().Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d", maxAge))
 			return next(c)
 		}