Amanda/delete task template

[amanduhhhh]

Notion ticket link

Create Delete Task Template Screen

Implementation description

• Created delete modal based on PopupModal component
• Connected the delete button to TaskTemplateAPIClient.deleteTaskTemplate

Steps to test

1. Add a task template to your database
2. Navigate to /admin/tasks/edit/{:your task template id}
3. Delete the task template

What should reviewers focus on?

• Ensure the delete modal looks fine (according to the figma)
• Ensure delete button deletes your task properly
• Side note: the edit task template page has some user placeholder terms, this was addressed in this pr

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages are descriptive and in imperative tense. My commits are atomic and trivial commits are squashed or fixup'd into non-trivial commits
• I have run the appropriate linter(s)
• I have requested a review from the PL, as well as other devs who have background knowledge on this PR or who will be building on top of this PR

[Akishai18]

LGTM, Good work!