[Gekidou] post component tree and partial postList (#5637)

types/global/markdown.d.ts

@@ -1,7 +0,0 @@
-// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
-// See LICENSE.txt for license information.
-
-type UserMentionKey= {
-    key: string;
-    caseSensitive?: boolean;
-};

types/global/markdown.ts

@@ -0,0 +1,19 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {TextStyle, ViewStyle} from 'react-native';
+
+export type UserMentionKey= {
+    key: string;
+    caseSensitive?: boolean;
+};
+
+export type MarkdownBlockStyles = {
+    adjacentParagraph: ViewStyle;
+    horizontalRule: ViewStyle;
+    quoteBlockIcon: TextStyle;
+};
+
+export type MarkdownTextStyles = {
+    [key: string]: TextStyle;
+};