Add per library journal abbreviation type (LTWA) on save

[faneeshh]

Related issues and pull requests

Closes #15495

PR Description

Steps to test

Checklist

• 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 added a screenshot in the PR description showing a library with a single entry with me as author and as title the issue number
• [.] I described the change in CHANGELOG.md in a way that can be understood by the average user (if change is visible to the user)
• [.] I checked the user documentation for up to dateness and submitted a pull request to our user documentation repository

[jabref-machine]

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