feat: allow using UUID in PreparedStatement (#365)

Enables the usage of UUIDs as a parameter in PreparedStatements. UUIDs are
automatically translated to strings.

Fixes #364

src/main/java/com/google/cloud/spanner/jdbc/JdbcParameterStore.java

@@ -45,6 +45,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.UUID;
 
 /** This class handles the parameters of a {@link PreparedStatement}. */
 class JdbcParameterStore {
@@ -507,6 +508,8 @@ private Builder setParamWithKnownType(ValueBinder<Builder> binder, Object value,
           }
         } else if (value instanceof URL) {
           return binder.to(((URL) value).toString());
+        } else if (value instanceof UUID) {
+          return binder.to(((UUID) value).toString());
         }
         throw JdbcSqlExceptionFactory.of(value + " is not a valid string", Code.INVALID_ARGUMENT);
       case Types.DATE:
@@ -649,6 +652,8 @@ private Builder setParamWithUnknownType(ValueBinder<Builder> binder, Object valu
       return binder.to(String.valueOf((char[]) value));
     } else if (URL.class.isAssignableFrom(value.getClass())) {
       return binder.to(((URL) value).toString());
+    } else if (UUID.class.isAssignableFrom(value.getClass())) {
+      return binder.to(((UUID) value).toString());
     } else if (byte[].class.isAssignableFrom(value.getClass())) {
       return binder.to(ByteArray.copyFrom((byte[]) value));
     } else if (InputStream.class.isAssignableFrom(value.getClass())) {