Init globalSettings

contexts/globalSettings.ts

@@ -0,0 +1,11 @@
+import create from 'zustand'
+
+export type Timezone = 'UTC' | 'Local'
+
+export const useGlobalSettings = create(() => ({
+  timezone: 'UTC' as Timezone,
+}))
+
+export const setTimezone = (timezone: Timezone) => {
+  useGlobalSettings.setState({ timezone })
+}