覆盖 bun install 的默认 npm registry

[install]
# 将默认 registry 设置为字符串
registry = "https://registry.npmjs.org"

# 如有需要，设置令牌
registry = { url = "https://registry.npmjs.org", token = "123456" }

# 如有需要，设置用户名/密码
registry = "https://usertitle:[email protected]"

[install]
registry = { url = "https://registry.npmjs.org", token = "$npm_token" }