Refactor formatter cleanup classes

[EricW123]

Refactor Formatter and FieldFormatterCleanups in package org.jabref.logic.cleanup.

• Move Formatter to logic.formatter package, as base class of other formatters.
• Rename FieldFormatterCleanups to FieldFormatterCleanupActions.
• Abstract parsing logic to a new class named FieldFormatterCleanupParser.

Closes #14280

Steps to test

Mandatory checks

• I own the copyright of the code submitted and I license it under the MIT license
• I manually tested my changes in running JabRef (always required)
• [/] I added JUnit tests for changes (if applicable)
• [/] I added screenshots in the PR description (if change is visible to the user)
• [/] I described the change in CHANGELOG.md in a way that is understandable for the average user (if change is visible to the user)
• I checked the user documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request updating file(s) in https://github.com/JabRef/user-documentation/tree/main/en.

[jabref-machine]

Your code currently does not meet JabRef's code guidelines. IntelliJ auto format covers some cases. There seem to be issues with your code style and autoformat configuration. Please reformat your code (Ctrl+Alt+L) and commit, then push.

In special cases, consider using // formatter:off and // formatter:on annotations to allow deviation from the code style.

[koppor]

@EricW123 Thank you for your contribution. Please fix the the issues discovered by the CI so that the code is proapred for human review.