add types for fonts imported by webpack

types/index.d.ts

@@ -1,2 +1,3 @@
 export * from "./note";
 export * from "./repository";
+export * from "./webpack";

types/webpack.d.ts

@@ -0,0 +1,11 @@
+// support webfonts statically imported by webpack via custom config in next.config.js:
+
+declare module "*.woff" {
+  const content: string;
+  export default content;
+}
+
+declare module "*.woff2" {
+  const content: string;
+  export default content;
+}