Add Redux and reducers.

Load i18n files and add dayjs.

src/context/index.tsx

@@ -0,0 +1,15 @@
+import State from "../redux/State";
+import { Children } from "../types/Preact";
+
+import Locale from "./Locale";
+import Theme from "./Theme";
+
+export default function Context({ children }: { children: Children }) {
+    return (
+        <State>
+            <Locale>
+                <Theme>{children}</Theme>
+            </Locale>
+        </State>
+    );
+}