extmod/webrepl: Move webrepl scripts to common place and use manifest.

Move webrepl support code from ports/esp8266/modules into extmod/webrepl
(to be alongside extmod/modwebrepl.c), and use frozen manifests to include
it in the build on esp8266 and esp32.

A small modification is made to webrepl.py to make it work on non-ESP
ports, i.e. don't call dupterm_notify if not available.

extmod/webrepl/manifest.py

@@ -0,0 +1 @@
+freeze('.', ('webrepl.py', 'webrepl_setup.py', 'websocket_helper.py',))

extmod/webrepl/webrepl.py

@@ -43,8 +43,9 @@ def accept_conn(listen_sock):
     ws = uwebsocket.websocket(cl, True)
     ws = _webrepl._webrepl(ws)
     cl.setblocking(False)
-    # notify REPL on socket incoming data
-    cl.setsockopt(socket.SOL_SOCKET, 20, uos.dupterm_notify)
+    # notify REPL on socket incoming data (ESP32/ESP8266-only)
+    if hasattr(uos, 'dupterm_notify'):
+        cl.setsockopt(socket.SOL_SOCKET, 20, uos.dupterm_notify)
     uos.dupterm(ws)
 
 

ports/esp32/boards/manifest.py

@@ -1,6 +1,6 @@
 freeze('$(PORT_DIR)/modules')
 freeze('$(MPY_DIR)/tools', ('upip.py', 'upip_utarfile.py'))
 freeze('$(MPY_DIR)/ports/esp8266/modules', 'ntptime.py')
-freeze('$(MPY_DIR)/ports/esp8266/modules', ('webrepl.py', 'webrepl_setup.py', 'websocket_helper.py',))
 freeze('$(MPY_DIR)/drivers/dht', 'dht.py')
 freeze('$(MPY_DIR)/drivers/onewire')
+include('$(MPY_DIR)/extmod/webrepl/manifest.py')

ports/esp8266/boards/manifest.py

@@ -2,3 +2,4 @@ freeze('$(PORT_DIR)/modules')
 freeze('$(MPY_DIR)/tools', ('upip.py', 'upip_utarfile.py'))
 freeze('$(MPY_DIR)/drivers/dht', 'dht.py')
 freeze('$(MPY_DIR)/drivers/onewire')
+include('$(MPY_DIR)/extmod/webrepl/manifest.py')