Optional ReadonlyapplyRegex replacements to try against a sourced file's candidate name, tried in order alongside the original
name, e.g. { '.*\\.R$': 'main.R' } makes source("foo bar.R") also try main.R.
Optional ReadonlyassumeReadonlydropReadonlyignoreReadonlyinferOptional ReadonlyrepeatedReadonlysearch
see FlowrConfig.Schema's
resolveSourcefor the per-field descriptions (kept there once, as that is what generates the published config docs)