Bump TypeScript to 5.3 with verbatimModuleSyntax

This commit upgrades TypeScript to the latest version 5.3 and introduces
`verbatimModuleSyntax` in line with the official Vue guide
recommendatinos (vuejs/docs#2592).

By enforcing `import type` for type-only imports, this commit improves
code clarity and supports tooling optimization, ensuring imports are
only bundled when necessary for runtime.

Changes:

- Bump TypeScript to 5.3.3 across the project.
- Adjust import statements to utilize `import type` where applicable,
  promoting cleaner and more efficient code.

vite.config.ts

@@ -1,6 +1,6 @@
 /// <reference types="vitest" />
 import { resolve } from 'node:path';
-import { defineConfig, UserConfig } from 'vite';
+import { defineConfig, type UserConfig } from 'vite';
 import vue from '@vitejs/plugin-vue';
 import legacy from '@vitejs/plugin-legacy';
 import ViteYaml from '@modyfi/vite-plugin-yaml';