esp32/network_wlan: Rename WLAN keyword args to ssid/security/key.

The WLAN.config() method now supports "ssid", "security" and "key" as
aliases to the existing "essid", "authmode" and "password", which are now
deprecated.

Addresses issue #8083.
diff --git a/ports/esp32/network_wlan.c b/ports/esp32/network_wlan.c
index 58c898d..9109941 100644
--- a/ports/esp32/network_wlan.c
+++ b/ports/esp32/network_wlan.c
@@ -218,7 +218,7 @@
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(network_wlan_active_obj, 1, 2, network_wlan_active);
 
 STATIC mp_obj_t network_wlan_connect(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
-    enum { ARG_ssid, ARG_password, ARG_bssid };
+    enum { ARG_ssid, ARG_key, ARG_bssid };
     static const mp_arg_t allowed_args[] = {
         { MP_QSTR_, MP_ARG_OBJ, {.u_obj = mp_const_none} },
         { MP_QSTR_, MP_ARG_OBJ, {.u_obj = mp_const_none} },
@@ -239,8 +239,8 @@
             p = mp_obj_str_get_data(args[ARG_ssid].u_obj, &len);
             memcpy(wifi_sta_config.sta.ssid, p, MIN(len, sizeof(wifi_sta_config.sta.ssid)));
         }
-        if (args[ARG_password].u_obj != mp_const_none) {
-            p = mp_obj_str_get_data(args[ARG_password].u_obj, &len);
+        if (args[ARG_key].u_obj != mp_const_none) {
+            p = mp_obj_str_get_data(args[ARG_key].u_obj, &len);
             memcpy(wifi_sta_config.sta.password, p, MIN(len, sizeof(wifi_sta_config.sta.password)));
         }
         if (args[ARG_bssid].u_obj != mp_const_none) {
@@ -410,6 +410,7 @@
                         esp_exceptions(esp_wifi_set_mac(self->if_id, bufinfo.buf));
                         break;
                     }
+                    case MP_QSTR_ssid:
                     case MP_QSTR_essid: {
                         req_if = WIFI_IF_AP;
                         size_t len;
@@ -424,11 +425,13 @@
                         cfg.ap.ssid_hidden = mp_obj_is_true(kwargs->table[i].value);
                         break;
                     }
+                    case MP_QSTR_security:
                     case MP_QSTR_authmode: {
                         req_if = WIFI_IF_AP;
                         cfg.ap.authmode = mp_obj_get_int(kwargs->table[i].value);
                         break;
                     }
+                    case MP_QSTR_key:
                     case MP_QSTR_password: {
                         req_if = WIFI_IF_AP;
                         size_t len;
@@ -503,6 +506,7 @@
                     goto unknown;
             }
         }
+        case MP_QSTR_ssid:
         case MP_QSTR_essid:
             switch (self->if_id) {
                 case WIFI_IF_STA:
@@ -519,6 +523,7 @@
             req_if = WIFI_IF_AP;
             val = mp_obj_new_bool(cfg.ap.ssid_hidden);
             break;
+        case MP_QSTR_security:
         case MP_QSTR_authmode:
             req_if = WIFI_IF_AP;
             val = MP_OBJ_NEW_SMALL_INT(cfg.ap.authmode);