Move `ThreePidCredentials` to its own file and make it internal

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/AuthParams.kt

@@ -89,14 +89,3 @@ internal data class AuthParams(
     }
 }
 
-@JsonClass(generateAdapter = true)
-data class ThreePidCredentials(
-        @Json(name = "client_secret")
-        val clientSecret: String? = null,
-
-        @Json(name = "id_server")
-        val idServer: String? = null,
-
-        @Json(name = "sid")
-        val sid: String? = null
-)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/ThreePidCredentials.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2022 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.matrix.android.sdk.internal.auth.registration
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+
+@JsonClass(generateAdapter = true)
+internal data class ThreePidCredentials(
+        @Json(name = "client_secret")
+        val clientSecret: String? = null,
+
+        @Json(name = "id_server")
+        val idServer: String? = null,
+
+        @Json(name = "sid")
+        val sid: String? = null
+)