Add an empty state for the space screen if the user can modify its graph (#6064)

* Add an empty state for the space screen if the user can modify its graph. It adds a new 'create room' button that allows you to open the create room screen with some preset values.

* When computing the editable spaces in `ConfigureRoomPresenter`, also set up the initial selected parent space if possible

* Use `Builder` pattern for `CreateRoomEntryPoint`

* Update screenshots

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Co-authored-by: ElementBot <android@element.io>

features/createroom/test/build.gradle.kts

@@ -16,5 +16,6 @@ android {
 dependencies {
     implementation(projects.features.createroom.api)
     implementation(projects.libraries.architecture)
+    implementation(projects.libraries.matrix.api)
     implementation(projects.tests.testutils)
 }

features/createroom/test/src/main/kotlin/io/element/android/features/createroom/api/FakeCreateRoomEntryPoint.kt

@@ -10,13 +10,19 @@ package io.element.android.features.createroom.api
 
 import com.bumble.appyx.core.modality.BuildContext
 import com.bumble.appyx.core.node.Node
+import io.element.android.libraries.matrix.api.core.RoomId
 import io.element.android.tests.testutils.lambda.lambdaError
 
 class FakeCreateRoomEntryPoint : CreateRoomEntryPoint {
-    override fun createNode(
-        isSpace: Boolean,
+    class Builder : CreateRoomEntryPoint.Builder {
+        override fun setIsSpace(isSpace: Boolean): Builder = this
+        override fun setParentSpace(parentSpaceId: RoomId): Builder = this
+        override fun build(): Node = lambdaError()
+    }
+
+    override fun builder(
         parentNode: Node,
         buildContext: BuildContext,
         callback: CreateRoomEntryPoint.Callback,
-    ): Node = lambdaError()
+    ): Builder = lambdaError()
 }