Step: env var with list value splitter

This step would split an environment variable which’s value is a list, to separate env vars.

Example : public install urls, if multiple is available, are exposed in a single env var, separated by pipe characters (as defined in: ).

This splitter step would expose the values as separate env vars.

Proposal: if input is ENV_LIST, the step would expose the envs as ENV_LIST_1, ENV_LIST_2, …