makeConfig should return an error

[winder]

Subject of the issue

When starting conduit with a data directory that has the wrong permissions, errors occur that do not halt the program.

{"__type":"Conduit","_name":"main","level":"error","msg":"Unable to create plugin data directory: mkdir data/importer_algod: permission denied","time":"2023-03-31T12:38:56Z"}

After seeing this error conduit continued to run until a later error crashes the program.

Solution

Modify makeConfig to propagate errors from MkdirAll and check them in pipeline.go:Init().