added interfaces and updated packages declaration

src/baleine/common/interface/client/IComToData.java

+package baleine.common.interface.client;
+
+public interface IComToData {
+
+}

src/baleine/common/interface/client/IDataToCom.java

+package baleine.common.interface.client;
+
+public interface IDataToCom {
+
+}

src/baleine/common/interface/server/IComToData.java

+package baleine.common.interface.server;
+
+public interface IComToData {
+
+}

src/baleine/common/interface/server/IDataToCom.java

+package baleine.common.interface.server;
+
+public interface IDataToCom {
+
+}