Rename okhttp3.internal.sse to okhttp3.sse.internal (square#6284)

I think this is slightly neater from an OSGi/JPMS perspective.

okhttp-sse/src/main/kotlin/okhttp3/sse/EventSources.kt

@@ -17,7 +17,7 @@ package okhttp3.sse
 
 import okhttp3.OkHttpClient
 import okhttp3.Response
-import okhttp3.internal.sse.RealEventSource
+import okhttp3.sse.internal.RealEventSource
 
 object EventSources {
   @JvmStatic

okhttp-sse/src/main/kotlin/okhttp3/internal/sse/RealEventSource.kt → okhttp-sse/src/main/kotlin/okhttp3/sse/internal/RealEventSource.kt

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package okhttp3.internal.sse
+package okhttp3.sse.internal
 
 import java.io.IOException
 import okhttp3.Call

okhttp-sse/src/main/kotlin/okhttp3/internal/sse/ServerSentEventReader.kt → okhttp-sse/src/main/kotlin/okhttp3/sse/internal/ServerSentEventReader.kt

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package okhttp3.internal.sse
+package okhttp3.sse.internal
 
 import java.io.IOException
 import okhttp3.internal.toLongOrDefault

okhttp-sse/src/test/java/okhttp3/internal/sse/Event.java → okhttp-sse/src/test/java/okhttp3/sse/internal/Event.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package okhttp3.internal.sse;
+package okhttp3.sse.internal;
 
 import java.util.Objects;
 import javax.annotation.Nullable;

okhttp-sse/src/test/java/okhttp3/internal/sse/EventSourceHttpTest.java → okhttp-sse/src/test/java/okhttp3/sse/internal/EventSourceHttpTest.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package okhttp3.internal.sse;
+package okhttp3.sse.internal;
 
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Nullable;

okhttp-sse/src/test/java/okhttp3/internal/sse/EventSourceRecorder.java → okhttp-sse/src/test/java/okhttp3/sse/internal/EventSourceRecorder.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package okhttp3.internal.sse;
+package okhttp3.sse.internal;
 
 import java.io.IOException;
 import java.util.concurrent.BlockingQueue;

okhttp-sse/src/test/java/okhttp3/internal/sse/ServerSentEventIteratorTest.java → okhttp-sse/src/test/java/okhttp3/sse/internal/ServerSentEventIteratorTest.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package okhttp3.internal.sse;
+package okhttp3.sse.internal;
 
 import java.io.IOException;
 import java.util.ArrayDeque;