[RESEARCH] Consider slowly shifting various singleton managers to their own instances

[japtar10101]

Describe what to research into

Evaluate and create issues based on the effort it would take to shift the following singletons to their own script:

• [ ] SceneTransitionManager (issue #46)
  • As a static class, and project setting window
• [ ] MenuManager
  • As its own prefab
• [x] WebLocationChecker (issue #47)
  • As a static class, and project setting window
• [x] GameSettings
  • As a static class, and project setting window
• [ ] CameraManager
  • As its own prefab
• [x] TranslationManager (issue #25)
  • As a static class, and project setting window
• [ ] SocialManager
  • As a static class, and project setting window
• [x] TimeManager
  • As a static class, and project setting window
• [x] AudioMixerReferences
  • As a static class, and project setting window

Additional context

Carry-over from the old Bitbucket Mercurial project: https://bitbucket.org/OmiyaGames/hg-template-unity-project/issues/66

[japtar10101]

For some of these Singletons, converting them into a SettingsProvider might be the best choice.