esp32/boards/manifest.py: Freeze aioespnow into firmware by default.

Also remove corresponding commented line from esp8266/boards/manifest.py.
It doesn't have enough flash to have this frozen by default.
Signed-off-by: Glenn Moloney <glenn.moloney@gmail.com>

ports/esp32/boards/manifest.py

@@ -5,7 +5,7 @@ include("$(MPY_DIR)/extmod/asyncio")
 require("bundle-networking")
 
 # Require some micropython-lib modules.
-# require("aioespnow")
+require("aioespnow")
 require("dht")
 require("ds18x20")
 require("neopixel")

ports/esp8266/boards/manifest.py

 freeze("$(PORT_DIR)/modules")
-# require("aioespnow")
 require("bundle-networking")
 require("dht")
 require("ds18x20")