Intervention validations

[Tom-Szendrey]

Purpose:

• Prevent users from creating invalid intervention policies and provide simple toast to them for their understanding what is disallowed
• An invalid intervention policy is one that has a static intervention with a negative timestamp, or any duplicate appliedTo + time pairs in static interventions

Description

• add a validation check for interventions. This will throw an error when:
  • There is a negative timestamp found in a static intervention.
  • There are two static interventions that are duplicated within a single intervention
  • There are two static interventions that are duplicated within different interventions within a single policy
• added some simple test cases for the validations
• Allow for user to delete interventions via the sidebar
• Add the confirm back into app.vue so we can utilize primevue's useConfirm -> Yohann can clean this later

Follow up:

(I want to reduce how big the PR is for readability)
Will remove the menu in the side panel and add a trash symbol.
When user clicks on a card it will select it
When user clicks on the trash it will delete

Pictures:

Requested changes that have been made and github doesnt realize?