refactor to tamagui

apps/expo/src/stores/theme/index.ts

@@ -0,0 +1,20 @@
+import { create } from "zustand";
+import { immer } from "zustand/middleware/immer";
+
+export type ThemeStoreOption = "main" | "blue" | "gray" | "red" | "teal";
+
+export interface ThemeStore {
+  theme: ThemeStoreOption;
+  setTheme(v: ThemeStoreOption): void;
+}
+
+export const useThemeStore = create(
+  immer<ThemeStore>((set) => ({
+    theme: "main",
+    setTheme(v) {
+      set((s) => {
+        s.theme = v;
+      });
+    },
+  })),
+);