Add support for ONYX_GO7 device ID (#584)

Re-adding Onyx_go7 after bb8a3c2 fix

Author: Tukks

app/src/main/java/org/koreader/launcher/device/EPDFactory.kt

@@ -106,6 +106,7 @@ object EPDFactory {
                 DeviceInfo.Id.ONYX_GALILEO2,
                 DeviceInfo.Id.ONYX_GO_103,
                 DeviceInfo.Id.ONYX_GO6,
+                DeviceInfo.Id.ONYX_GO7,
                 DeviceInfo.Id.ONYX_GO7GEN2,
                 DeviceInfo.Id.ONYX_KON_TIKI2,
                 DeviceInfo.Id.ONYX_LEAF,