feat(vue-vite): upgrade to eslint@10 and flat config

[TheCrazyMaffin]

Description

• Migrate to eslint flat config.
  • Config from .eslintignore and .eslintrc.cjs is included, matching the previous functionality.
  • Patterns from .eslintignore that are omitted shouldnt make a difference because they werent files being linted in the first place.
• Upgrade eslint@^8.35.0 --> ^10.12.0
• Upgrade eslint-plugin-vue@^9.9.0 --> ^10.11.1
• Upgrade @vue/eslint-config-typescript@^12.0.0 --> ^14.9.0
• Add globals@^17.13.0 and @eslint/js@^10.0.1 as required by flat config

Tests or Reproductions

• Running the test scripts specified in ionic.start.json for the vue-vite templates (blank, list, sidemenu, tabs) finishes without errors.
• Running eslint for the built templates with inserted deliberate problems detects these problems.

Notes / Comments

• Currently globals.node are being used but probably arent available in browsers. Example: Using process.env.NODE_ENV in a template does not trigger a eslint problem. (Which would be the case for globals.browser)