[Feature Request]: get_code to return single string

[gogonzo]

Feature description

get_code returns a vector of calls but it is never user as vector. In all the cases we concatenating vector to single string and then print or display.

Acceptance criteria:

1. get_code should return string
2. find occurrences of teal.code::get_code in all repos and make a respective change

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• I agree to follow this project's Code of Conduct.

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[m7pr]

Hey, I think this is a duplicate of #173 that was closed during #176
Should we close this one?

[gogonzo]

Addressed