WIP. Probably need to cherry pick stuff out of here.

Added ClientConnection and server-side handshake.
Added MessageSerialiser and Deserialiser.
#story[1095]

racevisionGame/src/main/java/shared/exceptions/BoatNotFoundException.java

@@ -0,0 +1,15 @@
+package shared.exceptions;
+
+/**
+ * An exception thrown when a specific boat cannot be found.
+ */
+public class BoatNotFoundException extends Exception {
+
+    public BoatNotFoundException(String message) {
+        super(message);
+    }
+
+    public BoatNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

racevisionGame/src/main/java/shared/exceptions/HandshakeException.java

@@ -0,0 +1,24 @@
+package shared.exceptions;
+
+/**
+ * An exception thrown when we the client-server handshake fails.
+ */
+public class HandshakeException extends Exception {
+
+    /**
+     * Constructs the exception with a given message.
+     * @param message Message to store.
+     */
+    public HandshakeException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs the exception with a given message and cause.
+     * @param message Message to store.
+     * @param cause Cause to store.
+     */
+    public HandshakeException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}