feat: Improve Sunshine compatibility

[FrogTheFrog]

Description

Improve Sunshine compatibility by adding fatal log level and also improving compatibility with older compilers.

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 88.88889% with 2 lines in your changes missing coverage. Please review.

Project coverage is 93.79%. Comparing base (693fb9f) to head (f0f4867).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #67      +/-   ##
==========================================
- Coverage   93.95%   93.79%   -0.16%     
==========================================
  Files          34       34              
  Lines        1836     1822      -14     
  Branches     1026     1010      -16     
==========================================
- Hits         1725     1709      -16     
- Misses         50       58       +8     
+ Partials       61       55       -6     

Flag	Coverage Δ
Linux	89.37% <88.88%> (-1.22%)	⬇️
Windows	93.73% <88.88%> (-0.16%)	⬇️
macOS	69.38% <41.17%> (+1.10%)	⬆️

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

Files	Coverage Δ
src/common/file_settings_persistence.cpp	55.00% <100.00%> (ø)
src/common/include/display_device/logging.h	100.00% <ø> (ø)
src/common/logging.cpp	95.08% <88.23%> (-3.59%)	⬇️