Can't use List(String) varible type in parameter var

[IWB-jdetournay]

Orb Version
3.0.1

Describe the bug
Using a List(String) type is not permit with the parameter var since it use a , to separate value.
i.e. foo=[bar,foo] is separated as -var foo=[bar -var foo]
Giving the error: -var option foo] is not correctly specified.

To Reproduce

- terraform/apply:
    var: 'foo=[bar,foo]'

Expected behavior

foo=[bar,foo] is separated as -var foo=[bar,foo]

Additional context

In the code a tr is use to replace , by a \n

for var in $(echo "${TF_PARAM_VAR}" | tr ',' '\n'); do
    PLAN_ARGS="$PLAN_ARGS -var $(eval echo "$var")"
done