fix: Rename package from contact to selectionInput

Author: PierrickVoulet

java/selection-input/src/main/java/com/google/chat/selectionInput/App.java

@@ -11,7 +11,7 @@
  * express or implied. See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.google.chat.contact;
+package com.google.chat.selectionInput;
 
 import java.text.SimpleDateFormat;
 import java.util.Date;