Add Scrollable Days and Time Slots to CalendarView

[asserusama]

Issue:

•	Days were displayed statically, limited to four entries.
•	Time slots were fixed and did not allow vertical scrolling.
•	Day names were hardcoded, requiring manual updates.

Solution:

•	Added horizontal scrolling for all days of the month.
•	Enabled vertical scrolling for time slots.
•	Made day names dynamic, based on the date.

Key Changes:

•	Replaced static day boxes with a ScrollView(.horizontal) using a ForEach loop for 31 days.
•	Replaced hardcoded time slots with a ScrollView(.vertical) spanning 12 AM–11 PM.
•	Added dayOfWeek(for:) to calculate day names dynamically.