Allow importing plugins from shared libraries

[RiscadoA]

Description

This is the first step towards having a standalone editor application! This PR just adds a new class, DynamicPlugin, which is used to load shared libraries and import plugins from them, in a cross-platform manner.

For example, you could do something like:

DynamicPlugin plugin{};
plugin.load("game.dll"); // would have a different name in linux, probably "game.so" or smth
cubos.plugin(plugin.function());

This isn't meant to be used directly by the user - it will be mostly used internally by the Tesseratos application.

Also included a small commit adding some missing @ingroup tags.

Checklist

• [x] Self-review changes.
• [x] Evaluate impact on the documentation.
• [x] Ensure test coverage. Cumbersome to do it in a cross-platform way; I think we can leave this to a later stage.
• [x] Write new samples. Same as above.
• [x] Add entry to the changelog's unreleased section.

[github-actions[bot]]

PR Preview Action v1.4.7 :---: :rocket: Deployed preview to https://GameDevTecnico.github.io/cubos/docs-preview/pr-1222/ on branch gh-pages at 2024-06-10 12:14 UTC

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 21 lines in your changes missing coverage. Please review.

Project coverage is 40.48%. Comparing base (8a9e086) to head (388251e).

Files	Patch %	Lines
core/src/ecs/dynamic.cpp	0.00%	21 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1222 +/- ## ========================================== - Coverage 40.51% 40.48% -0.04% ========================================== Files 351 352 +1 Lines 26152 26173 +21 ========================================== Hits 10596 10596 - Misses 15556 15577 +21 ```

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[diogomsmiranda]

Is this supposed to have no test coverage?

[RiscadoA]

Is this supposed to have no test coverage?

Take a look at the checklist, I added a note there. Will probably be easier to cover it on an upper layer.

[diogomsmiranda]

Is this supposed to have no test coverage?

Take a look at the checklist, I added a note there. Will probably be easier to cover it on an upper layer.

Got it!! thanks