Add SelectJobPlaceholder, job prefix and suffix

[gaboss44]

• add a new placeholder that selects a job value from a player job list which can be sorted, filtered, and selected by position
• add job prefix and suffix, for practicality (to separate colors, maybe job symbols, etc)

Description

This introduces a new select-style placeholder that allows retrieving a specific job-related value from a player’s job list.
The placeholder supports filtering, multi-criteria sorting, and position-based selection, making it suitable for dynamic displays such as scoreboards, GUIs, and chat formats.

Also, job prefix and suffix values are exposed for convenience, for better formatting (e.g. colors, symbols, or separators).

The implementation does not modify existing placeholders.

Type of Change

• Bug fix
• New feature
• Enhancement/Improvement
• Documentation
• Refactoring
• Other (describe below)

Related Issues

This PR is not related to any known bug or issue

Checklist

• My code follows the project's coding style
• I have tested my changes locally
• I have updated the documentation if needed
• My changes don't break existing functionality

Testing

I compiled the code using 'mvn package' and tried it locally (MC Paper version 1.21.10-117-ver/1.21.10@df4b668). The selector placeholder works as intended after testing its syntax. No errors show up in console when the placeholder is used, regardless of whether it finds a value.

Screenshots (if applicable)

There are no GUI changes in this PR

[github-actions]

👋 Hello @gaboss44, thank you for your first pull request!

We appreciate your contribution to UniverseJobs. A maintainer will review your changes soon.

Please make sure:

• Your code follows the project's coding style
• You've tested your changes
• The build passes (mvn clean package)

Thanks for helping improve the plugin! 🚀

[sonarqubecloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

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It will be closed in 7 days if no further activity occurs.

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[github-actions]

🔒 This pull request has been automatically closed due to inactivity.

Feel free to reopen it if you'd like to continue working on it.