Add /utils subpath export for utility functions

[chan-hwi]

This PR adds a subpath exports (/utils) to the nurl package, allowing utility functions (match, mask) to be imported via @naverpay/nurl/utils.

import { match, mask } from '@naverpay/nurl/utils'


const params = match('/v1/user/12345/info', '/v1/user/:userId/info')

[yceffort-naver]

LGTM

[boxersb]

Is it not permitted to export anything in internal.ts externally?
Why?

[chan-hwi]

Is it not permitted to export anything in internal.ts externally? Why?

The utility functions in internal.ts have not been exported previously, so I assumed they were intended for internal use only.

Is there a need to export these functions as well?

[boxersb]

Is it not permitted to export anything in internal.ts externally? Why?

@yceffort-naver What do you think?

[yceffort-naver]

Since the functions in internal.ts are already exposed in the build output, I think we have two options:

1. Merge internal.ts and external.ts into a single file and export everything
2. Adjust the bundler configuration to prevent internal.ts from being exported as a separate module (more difficult)

Which approach would you prefer?

[boxersb]

@yceffort-naver I think option 1 would be fine.