Add first version of roadmap

app/javascript/interfaces/IBoard.ts

@@ -0,0 +1,7 @@
+interface IBoard {
+  id: number;
+  name: string;
+  description?: string;
+}
+
+export default IBoard;

app/javascript/interfaces/IPost.ts

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+interface IPost {
+  id: number;
+  title: string;
+  description?: string;
+  board_id: number;
+  post_status_id?: number;
+  user_id: number;
+  created_at: string;
+}
+
+export default IPost;

app/javascript/interfaces/IPostStatus.ts

@@ -0,0 +1,7 @@
+interface IPostStatus {
+  id: number;
+  name: string;
+  color: string;
+}
+
+export default IPostStatus;