Implement the new one-on-one layout

src/grid/OneOnOneLayout.module.css

@@ -0,0 +1,56 @@
+/*
+Copyright 2024 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.
+*/
+
+.layer {
+  margin-inline: var(--inline-content-inset);
+  block-size: 100%;
+  display: grid;
+  place-items: center;
+}
+
+.container {
+  position: relative;
+}
+
+.local {
+  position: absolute;
+  inline-size: 180px;
+  block-size: 135px;
+  inset: var(--cpd-space-4x);
+}
+
+.spotlight {
+  position: absolute;
+  inline-size: 404px;
+  block-size: 233px;
+  inset: -12px;
+}
+
+.slot[data-block-alignment="start"] {
+  inset-block-end: unset;
+}
+
+.slot[data-block-alignment="end"] {
+  inset-block-start: unset;
+}
+
+.slot[data-inline-alignment="start"] {
+  inset-inline-end: unset;
+}
+
+.slot[data-inline-alignment="end"] {
+  inset-inline-start: unset;
+}