Config/CLI parser template for rust projects

Features:

--- Lots of different comments and list brackets

--- '_' instead of empty values

--- Must use double quotes for values inside config file

Comments: ';;', '#', '==>', '-->', '/*', '//'

List brackets: '< >', '[ ]', '{ }'

Usage: (CLI) --some-option='value',

(Config) some_option = "value", some_option = <"value1", "value2">