Added FrequencyEnum for Reset Frequency Values

[giagara]

Changes:

Introduced a new enum FrequencyEnum in the file src/Enum/FrequencyEnum.php. The FrequencyEnum defines the possible values for the reset_frequency column. Added the following values in the enum:

• EVERY_SECOND = 'every second'
• EVERY_MINUTE = 'every minute'
• EVERY_HOUR = 'every hour'
• EVERY_DAY = 'every day'
• EVERY_WEEK = 'every week'
• EVERY_TWO_WEEKS = 'every two weeks'
• EVERY_MONTH = 'every month'
• EVERY_QUARTER = 'every quarter'
• EVERY_SIX_MONTHS = 'every six months'
• EVERY_YEAR = 'every year'

Benefits:

Centralized management of reset frequency values. Simplifies handling time-based operations with the integration of Carbon date-time library. Ensures consistency and reduces the risk of errors associated with manual time calculations.

Please review the changes and let me know if any further modifications are needed.