BREAKING CHANGE: ecstasy::ResourceReference now use std::reference_wrapper

[AndreasLrx]

Description

TL;DR;

Old behavior:

class MyResource : public ecstasy::Resource<MyResource> {
   [...]
};

/* Inside a function */
registry.getResource<MyResource>()->myMethod();

New behavior:

class MyResource : public ecstasy::IResource {
   [...]
};

/* Inside a function */
registry.getResource<MyResource>().get().myMethod();

Explanations

And added a get method in the LockableView, equivalent to the one of the std::reference_wrapper. This means all ResourceReference need to use get() to access the underlying resource, regardless of the thread safe variable.

The previous way was to always use the arrow operator ->, which was defined in the templated Resource class but it wasn't a good idea because it breaks when the underlying type also define the -> arrow operator (such as ObjectWrapper, which was used by the sfml and was causing the initial issue #170).
Therefore this behavior was deleted: Resource<> and ResourceBase are now a single basic IResource with nothing in it (still required as a type erasure way to store the resources in the same container)

Close #170

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

[optional] Minor fixes

Fix #174 not running build CI AT ALL

Added/updated tests?

• New tests written
• Existing tests updated
• Tests are not required because this is a documentation update
• I need help with writing tests

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 92.85714% with 1 line in your changes missing coverage. Please review.

Project coverage is 82.01%. Comparing base (2706640) to head (2b567f3).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/ecstasy/resources/IResource.hpp	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #177      +/-   ##
==========================================
+ Coverage   81.93%   82.01%   +0.08%     
==========================================
  Files          64       64              
  Lines        1129     1129              
  Branches      352      352              
==========================================
+ Hits          925      926       +1     
+ Misses        144      143       -1     
  Partials       60       60              

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