updated string locs (#357)

libs/radio/_locales/ja/radio-strings.json

@@ -0,0 +1,9 @@
+{
+  "radio.onDataPacketReceived|block": "無線で受信したとき",
+  "radio.sendNumber|block": "無線で数字 %value を送信",
+  "radio.sendString|block": "無線で文字列を送信 %msg",
+  "radio.sendValue|block": "無線で送信 | %name |= %value",
+  "radio.setTransmitPower|block": "無線の送信パワー %power",
+  "radio.setTransmitSerialNumber|block": "無線でシリアル番号を送信 %transmit",
+  "{id:category}Radio": "無線"
+}