NewGoatApp create new app instance.

NewHealthChecker create new instance of app.HealthChecker.

NewMockupApp create new mockup application.

ConfigFilePath is path to main config file.

CWDPath is default Current Working Directory (CWD) path.

GoatApp is base app template.

HealthCheckers is implements app.HealthCheckers.

MockupApp is default mockup applicationo (used by test code).

Params define new app.