Replace vite-tsconfig-paths with Vite 8's native resolve.tsconfigPaths

[314systems]

vinext currently uses vite-tsconfig-paths to resolve tsconfig.json path aliases.

However, vite-tsconfig-paths depends on tsconfck, which has been discontinued and does not declare TypeScript v6 as a supported peer dependency.

Users on TypeScript v6 therefore see peer dependency warnings when installing vinext.

See also: aleclarson/vite-tsconfig-paths#219.