fix: modified --root-path option behavior when CLI init

[maintain0404]

Description

• This PR adjusts paths of vite-related assets when create new project using litestar assets init command. Every vite-related assets created under root_path directory. See Adjusting file locations for Vite-related assets #16

before this PR, execute litestar assets init --root-path web --resource-path web/src --public-path web/public --bundle-path web/dist

app.py
templates/
web/
├── dist/
├── public/
└── src/
node_modules/
package.json
package-lock.json
vite.config.js

after this PR, execute llitestar assets init --root-path web --resource-path src --public-path public --bundle-path dist

app.py
templates/
web/
├── node_modules/
├── dist/
├── public/
├── resources/
├── package.json
├── package-lock.json
└── vite.config.js