Use the SDK Client to check whether a homeserver is compatible (#5664)

* Use the SDK `Client` to check whether a HS is compatible

* Remove usage of unused `WellKnown`, keep `ElementWellKnown`

* Make `HomeServerLoginCompatibilityChecker.check` return `true/false` values to distinguish non-valid homeservers from a failed check

* Use `inMemoryStore` and `serverNameOrHomeserverUrl`

* Do some cleanup of `isValid` and `isWellknownValid`

* Make the debounce for starting the search a bit higher, as checking for the homeservers seems more resource-intensive now

libraries/wellknown/api/src/main/kotlin/io/element/android/libraries/wellknown/api/SessionWellknownRetriever.kt

@@ -8,6 +8,5 @@
 package io.element.android.libraries.wellknown.api
 
 interface SessionWellknownRetriever {
-    suspend fun getWellKnown(): WellknownRetrieverResult<WellKnown>
     suspend fun getElementWellKnown(): WellknownRetrieverResult<ElementWellKnown>
 }

libraries/wellknown/api/src/main/kotlin/io/element/android/libraries/wellknown/api/WellKnown.kt

@@ -1,17 +0,0 @@
-/*
- * Copyright 2023, 2024 New Vector Ltd.
- *
- * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
- * Please see LICENSE files in the repository root for full details.
- */
-
-package io.element.android.libraries.wellknown.api
-
-data class WellKnown(
-    val homeServer: WellKnownBaseConfig?,
-    val identityServer: WellKnownBaseConfig?,
-)
-
-data class WellKnownBaseConfig(
-    val baseURL: String?
-)

libraries/wellknown/api/src/main/kotlin/io/element/android/libraries/wellknown/api/WellknownRetriever.kt

@@ -8,6 +8,5 @@
 package io.element.android.libraries.wellknown.api
 
 interface WellknownRetriever {
-    suspend fun getWellKnown(baseUrl: String): WellknownRetrieverResult<WellKnown>
     suspend fun getElementWellKnown(baseUrl: String): WellknownRetrieverResult<ElementWellKnown>
 }