avr: added netstats window

There seems to be a problem with MLayout (writes imaginary row at
screen Y position 0 for unknown reasons).

avr/devices/c03/test/ressources.inc

@@ -46,7 +46,12 @@
 .equ RESSSOURCE_TXT_UNKNOWN_S     = 32
 .equ RESSSOURCE_TXT_ROOMCLIMATE   = 33
 .equ RESSSOURCE_TXT_AQHOME        = 34
-
+.equ RESSSOURCE_TXT_PACKETSIN     = 35
+.equ RESSSOURCE_TXT_PACKETSOUT    = 36
+.equ RESSSOURCE_TXT_ECONTENT      = 37
+.equ RESSSOURCE_TXT_EMSGSIZE      = 38
+.equ RESSSOURCE_TXT_EIO           = 39
+.equ RESSSOURCE_TXT_NETSTATS      = 40