feat: Initial WinApiLayer with some methods

[FrogTheFrog]

Description

Added the initial WinApiLayer that will act as the final layer between the code and OS.

WinApiLayer will have some basic testing, but not all code paths will be verified as it will be pain in the a** to mock the dreadful WinAPI...

Also applied some suggestions from CLion regarding consts.

Finally, removed this preamble:

/**
 * @file utils.cpp
 * @brief Utility functions
 */

Please, let's not use it in this library as it is the most useless thing and I hate it :'( . It always boils down to this description:
"filename.cpp" -> "Implements the class/functions"

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

Branch Updates

LizardByte requires that branches be up-to-date before merging. This means that after any PR is merged, this branch
must be updated before it can be merged. You must also
Allow edits from maintainers.

• I want maintainers to keep my branch updated

[codecov]

Codecov Report

Attention: Patch coverage is 35.23810% with 68 lines in your changes are missing coverage. Please review.

Project coverage is 45.45%. Comparing base (aa5a95f) to head (f49a393).

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #15       +/-   ##
===========================================
- Coverage   67.34%   45.45%   -21.90%     
===========================================
  Files           2        5        +3     
  Lines          49      154      +105     
  Branches       17       89       +72     
===========================================
+ Hits           33       70       +37     
- Misses          2        7        +5     
- Partials       14       77       +63     

Flag	Coverage Δ
Windows	45.45% <35.23%> (-21.90%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/logging.h	50.00% <ø> (ø)
src/platf/windows/winapilayer.h	100.00% <100.00%> (ø)
src/platf/windows/winapilayerinterface.h	100.00% <100.00%> (ø)
src/platf/windows/winapilayer.cpp	33.98% <33.98%> (ø)

[ReenigneArcher]

I think the coverage results are a little inaccurate. Trying to work through that for Sunshine as well in gcovr/gcovr#915