Dynamic paths for tools and removal of unused book endpoints

[Frooodle]

Description of Changes

This pull request includes several changes primarily focused on improving configuration management, removing deprecated methods, and updating paths for external dependencies. The most important changes are summarized below:

Configuration Management Improvements:

• Added a new RuntimePathConfig class to manage dynamic paths for operations and pipeline configurations (src/main/java/stirling/software/SPDF/config/RuntimePathConfig.java).
• Removed the bookAndHtmlFormatsInstalled bean and its associated logic from AppConfig and EndpointConfiguration (src/main/java/stirling/software/SPDF/config/AppConfig.java, src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java). [1] [2] [3]

External Dependency Path Updates:

• Updated paths for weasyprint and unoconvert in ExternalAppDepConfig to use values from RuntimePathConfig (src/main/java/stirling/software/SPDF/config/ExternalAppDepConfig.java). [1] [2]

Minor Adjustments:

• Corrected a typo from "Unoconv" to "Unoconvert" in EndpointConfiguration (src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java).

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Checklist

General

• [ ] I have read the Contribution Guidelines
• [ ] I have read the Stirling-PDF Developer Guide (if applicable)
• [ ] I have read the How to add new languages to Stirling-PDF (if applicable)
• [ ] I have performed a self-review of my own code
• [ ] My changes generate no new warnings

Documentation

• [ ] I have updated relevant docs on Stirling-PDF's doc repo (if functionality has heavily changed)
• [ ] I have read the section Add New Translation Tags (for new translation tags only)

UI Changes (if applicable)

• [ ] Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR)

Testing (if applicable)

• [ ] I have tested my changes locally. Refer to the Testing Guide for more details.