Specification

Currently the secrets env command contains different formats that get generated when it's not running a command. We need to add variants to these formats that include export within the file.

For example the unix format is structured as

ENV_ONE="one";
ENV_TWO="two";

But the new variant will include the export keyword

export ENV_ONE="one";
export ENV_TWO="two";

This should apply to all the existing formats where applicable. So if the cmd and powershell if they have a equavalent way of exporting env variables within a script then we should have a format version for them as well.

Additional context

Tasks

1. Add an export variant format for the unix format
2. Add an export variant for all other formats that can support it.