Display charts in the user's local timezone

[garciagaston]

This feature ensures that charts adapt to each user's local timezone, providing a more personalized and accurate data visualization experience. By automatically detecting the user's timezone or allowing them to set it manually, the system adjusts the timestamps of all data points to match their local time. This eliminates confusion caused by differing timezones, improves clarity, and enhances the relevance of time-based insights. For global users, this functionality is particularly useful in aligning data interpretation with their specific context, fostering better decision-making and user satisfaction.