# Functions
CheckCredentialsDBCtx looks for credentials in the DB.
CheckLocalCredentials verifies username and passwords on local json file.
GenerateCtx generates a token.
# Constants
QueryCredentials is a query that executed on DB returns true if both user and password are found in a record.
# Variables
CredentialsJSONFile is the json file containing credentials.
# Structs
Credentials is the type used to pass username and password around.
# Type aliases
CtxINTERFACE allows to inform all go routines.