Add Logger_Exit to match current NewLogger_* functions

[yanis-fourel]

These NewLogger_* functions do not have a clear matching function to delete created logger.
Solution:

• (opt) Rename these functions Logger_New_*
• Add Logger_Delete wrapper to current Logger_Exit

//! Returns a logger for STDOUT. Should not be present twice per `t_atapi`.
s_logger		NewLogger_StdOut(
	t_bool			log_timestamp,
	t_bool			log_verbose,
	t_bool			log_obfuscated,
	e_logformat		log_format
);

//! Returns a logger for STDERR. Should not be present twice per `t_atapi`.
s_logger		NewLogger_StdErr(
	t_bool			log_timestamp,
	t_bool			log_verbose,
	t_bool			log_obfuscated,
	e_logformat		log_format
);

//! Create a new logger object from the specified settings
e_exception		NewLogger(s_logger *a_result,
	char const*		log_path,
	t_bool			log_silence_logs,
	t_bool			log_silence_errors,
	t_bool			log_timestamp,
	t_bool			log_verbose,
	t_bool			log_obfuscated,
	t_bool			log_append,
	e_logformat		log_format
);

[Fulguritude]

The NewLogger functions are found in the AvesTerra source folder.
I would actually have the following behavior:

• Logger_New: construct a logger struct and open its fd

• Logger_Init: open an fd for a giver logger struct

• Logger_Duplicate: duplicate a logger struct, with the same fd

• Logger_Delete: release fd, free memory

• Logger_Exit: release fd, do not free memory (path)

• Logger_Delete_Memory: do not release fd, but free memory (useful when duplicating)