feat(schedules): add timezone support for scheduled jobs and update database schema

- Introduced a new `commonTimezones` array for timezone selection in the UI.
- Updated the schedule form to include an optional timezone field.
- Modified the database schema to add a `timezone` column to the `schedule` table.
- Enhanced the scheduling logic to utilize the specified timezone, defaulting to UTC if not provided.

apps/dokploy/server/api/routers/schedule.ts

@@ -30,6 +30,7 @@ export const scheduleRouter = createTRPCRouter({
 						scheduleId: newSchedule.scheduleId,
 						type: "schedule",
 						cronSchedule: newSchedule.cronExpression,
+						timezone: newSchedule.timezone,
 					});
 				} else {
 					scheduleJob(newSchedule);
@@ -49,6 +50,7 @@ export const scheduleRouter = createTRPCRouter({
 						scheduleId: updatedSchedule.scheduleId,
 						type: "schedule",
 						cronSchedule: updatedSchedule.cronExpression,
+						timezone: updatedSchedule.timezone,
 					});
 				} else {
 					await removeJob({