Implement Integration Test for taker-cli

[Shourya742]

Task

• Query the taker cli RPC port using an RPC call.

Details

• This test should be similar to our existing integration tests.
• Make queries to the taker's RPC port and verify the correctness of the responses.

Expected Outcome

• The test should successfully query the taker's RPC port and return correct responses, validating the functionality of the taker's RPC.

[mojoX911]

Further info:

This issue is for creating the first template of this type of test. It's okay if all the taker-cli commands are not covered in the solving PR. Once the template is ready we can add tests for further commands in subsequent PRs.

There is no RPC for taker-cli. takerr-cli is a REPL type of app. So each command has to be tested as a single executed process.

Approach:
Use the std::process::Command to issue a single taker-cli app command and evaluate the returned result.