Lint: Add eslint import plugin (#5955)

## Summary

Adds the linter, turns on the recommended and a few extra rules, fixes
existing violations.

Doesn't prohibit `../../...` imports yet, that'll be it's own PR.

## Changes

- **What**: Consistent and fixable imports
- **Dependencies**: The plugin and parser

## Review Focus

How do you feel about the recommended rules?
What about the extra ones?
[Any
more](https://github.com/un-ts/eslint-plugin-import-x?tab=readme-ov-file#rules)
you'd want to turn on?

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5955-Lint-Add-eslint-import-plugin-2856d73d3650819985c0fb9ca3fa94b0)
by [Unito](https://www.unito.io)

src/components/dialog/content/signin/SignUpForm.vue

@@ -67,7 +67,8 @@ import Checkbox from 'primevue/checkbox'
 import InputText from 'primevue/inputtext'
 import { useI18n } from 'vue-i18n'
 
-import { type SignUpData, signUpSchema } from '@/schemas/signInSchema'
+import { signUpSchema } from '@/schemas/signInSchema'
+import type { SignUpData } from '@/schemas/signInSchema'
 
 import PasswordFields from './PasswordFields.vue'