add wraps the writeFile-func by offering an overwrite-option.

getPass asks for a password (same as getStdin except we don't show what user enters in CLI).

getStdin asks question and returns the user reply.

parseFile reads the creds-dir with given pass.

randSeq creates a byte array of N-items.

scryptKey generates a password with random nonce for better security of file.

writeFile stores encrypted(json(f-var)) in given path.

Lookup-table for all files in creds.d dir.

Cred contains one entry in the file.

File is the base struct for every file.