Replace unipdf

[danvergara]

Replace unipdf with go-fitz

Description

As a user suggested, it seems that go-fitz is a better fit for morphos than unipdf is. I wanted to removed unipdf because of the license of the project, which is more like a product than a FOSS project.

/upload HTTP handler execution time using Unipdf:

/upload HTTP handler execution time using go-fitz:

Testing with a 60 pages PDF file, running the container on Linux (Fedora).

OS Name: Fedora Version: 39 Processor: Intel i7-8650U (8) @ 4.200GHz Installed Physical Memory (RAM) 24.0 GB

Fixes #45

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Ran the test suite and QA'd this to make sure the replacement works as expected.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] I have checked my code and corrected any misspellings