refactor: use modules in client

[anshumanv]

trafficstars

• [ ] This is a bugfix
• [ ] This is a feature
• [x] This is a code refactor
• [ ] This is a test update
• [ ] This is a docs update
• [ ] This is a metadata update

For Bugs and Features; did you add new tests?

Exisitng

Motivation / Use-Case

• Use module syntax in client

Breaking Changes

no

Additional Info

[anshumanv]

@alexander-akait some error, can't figure out what's wrong 😞