Invite list view

Adds a CTA on the room list to view invites if there are any.

The invite list presents each invite with accept/decline buttons
and (for room invites) the sender details.

Fixes #102

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/components/OutlinedButton.kt

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * 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 io.element.android.libraries.designsystem.theme.components
+
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.RowScope
+import androidx.compose.material3.ButtonColors
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ButtonElevation
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import io.element.android.libraries.designsystem.preview.ElementPreviewDark
+import io.element.android.libraries.designsystem.preview.ElementPreviewLight
+
+@Composable
+fun OutlinedButton(
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    shape: Shape = ElementOutlinedButtonDefaults.shape,
+    colors: ButtonColors = ElementOutlinedButtonDefaults.buttonColors(),
+    elevation: ButtonElevation? = ElementOutlinedButtonDefaults.buttonElevation(),
+    border: BorderStroke? = ElementOutlinedButtonDefaults.border,
+    contentPadding: PaddingValues = ElementOutlinedButtonDefaults.ContentPadding,
+    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
+    content: @Composable RowScope.() -> Unit
+) {
+    androidx.compose.material3.Button(
+        onClick = onClick,
+        modifier = modifier,
+        enabled = enabled,
+        shape = shape,
+        colors = colors,
+        elevation = elevation,
+        border = border,
+        contentPadding = contentPadding,
+        interactionSource = interactionSource,
+        content = content,
+    )
+}
+
+object ElementOutlinedButtonDefaults {
+    val ContentPadding = PaddingValues(horizontal = 24.dp, vertical = 14.dp)
+    val shape: Shape @Composable get() = ButtonDefaults.outlinedShape
+    val border: BorderStroke @Composable get() = ButtonDefaults.outlinedButtonBorder
+    @Composable
+    fun buttonElevation(): ButtonElevation = ButtonDefaults.buttonElevation()
+
+    @Composable
+    fun buttonColors(): ButtonColors = ButtonDefaults.outlinedButtonColors()
+
+
+}
+
+@Preview
+@Composable
+internal fun OutlinedButtonsLightPreview() = ElementPreviewLight { ContentToPreview() }
+
+@Preview
+@Composable
+internal fun OutlinedButtonsDarkPreview() = ElementPreviewDark { ContentToPreview() }
+
+@Composable
+private fun ContentToPreview() {
+    Column {
+        OutlinedButton(onClick = {}, enabled = true) {
+            Text(text = "Click me! - Enabled")
+        }
+        OutlinedButton(onClick = {}, enabled = false) {
+            Text(text = "Click me! - Disabled")
+        }
+    }
+}