feat: Dynamic shift of working hours don't exceed end time or precede start time

[sonjek]

When an interval is selected, the dynamic shift should ensure that the adjustment doesn't extend beyond the start or precede the end of working hours.

For instance, a typical work schedule of 09:00-19:00 could be adjusted to 09:14-18:46.

This shift introduces flexibility in start and end times, which helps maintain the program's activity without raising suspicion. However, it's crucial that these adjustments don't delay the commencement of work or cause the workday to conclude prematurely.

According to the new logic, the beginning of the workday will be shifted forward by 3-14 minutes, and the end of the workday will be extended by 3-14 minutes.

09:00-19:00 will be adjusted to start sometime between 08:46 and 09:00 and end of working hours between 19:00 and 19:14.