Add logger manager and refactor the linked managers

[borlnov]

refs #5

[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:bro_abstract_logger	1.1.0	ready to publish	bro_abstract_logger-v1.1.0
package:bro_config_manager	1.1.0	ready to publish	bro_config_manager-v1.1.0
package:bro_file_utility	1.1.0	ready to publish	bro_file_utility-v1.1.0
package:bro_global_manager	1.1.0	ready to publish	bro_global_manager-v1.1.0
package:bro_list_utility	1.1.0	ready to publish	bro_list_utility-v1.1.0
package:bro_logger_manager	1.0.0	ready to publish	bro_logger_manager-v1.0.0
package:bro_yaml_utility	1.1.0	ready to publish	bro_yaml_utility-v1.1.0
package:bro_abstract_manager	1.0.1	already published at pub.dev
package:bro_types_utility	1.0.1	already published at pub.dev

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.