Adds Maven Central publishing configuration to the PDF library.

• Added maven-publish plugin
• Added publishing block for local app repository
• Added mavenPublishing block with POM metadata
• Follows same pattern as preprocessor module

Part of #1403

@Stefterv hey started with PDF since it was the easiest.
Let me know if this looks good and I'll work on Net/SVG next. thanks

Thanks @avinxshKD I added a few comments ;)

sure was already on it thanks and welcome :)

@Stefterv Updated the coordinates and removed the signing checkk. and
hve skipped the optional migration for this PR to keep it focused on just enabling publishing. Happy to look into a shared plugin in a follow-up refactor for all libraries at once, what do you say?

The coordinates still need to be fixed, the version should be equal to the processing version, not the version from the library.properties

@Stefterv hve updated the version to use rootProject.version so it matches the Processing version as requested

@Stefterv so sorry. Been swamped with exams lately,will be more careful reviewing before pushing.
Made the changes u asked thanks

No worries @avinxshKD thank you for the changes they look great 💙

@Stefterv thanks is this ready to merge?? and i have worked for net SVG you can check #1411 thanks

@Stefterv so sorry. Been swamped with exams lately,will be more careful reviewing before pushing. Made the changes u asked thanks

Hi @avinxshKD! Just popping in to say, in general everything is pretty low-stakes. So there isn't any intense pressure. This can be a space to take it easy. Though, we really appreciate all the effort you've been making! And if you ever have questions, always feel free to discuss in the PR or in the discord with the others :)

Hope your exams aren't too stressful!

Okay popping out 🍿

thanks @catilac, really appreciate ur kind words
Exams are almost done now, so things should be smoother. Thanks again for being so supportive and I’ll definitely ask if I run into anything.

Dont know much about discord tho, but i will try fs <3

Yup see you around, thanks again for chcking in... means alot

@avinxshKD would you be able to rebase your branches onto main? We've fixed up some of the build shenanigins and I would like to see your checks passing before merging.

Please let me know if you have any questions about rebasing, and I'll be happy to help!

Hey @catilac Just saw this before heading to sleep, perfect timing heh. I’ve rebased both publish-pdf and gradle-net-svg-libs. Goodnight :)
Thanks @catilac @Stefterv