[Feature]: Alert Configuration - be able to choose "days" as frequency

What is the installation method of your PatchMon server?

Docker

What is the version of your PatchMon server?

2.0.2

Briefly describe the feature

Drop down for frequency type on alert type configurations

Detailed description

Be able to choose frequency type for notifications

Rather than setting 1440 minutes for 1 day, be nice to choose "day" rather than "min" for frequency

<img width="1065" height="582" alt="Image" src="https://github.com/user-attachments/assets/557b4809-cbd8-4c67-a185-d6e87378a26c" />

Why is this useful?

Ease of use, simplicity from a user / admin point of view.