Revamp the settings system (#7)

- A Settings Provider system to utilize addressables for loading settings at runtime
- An editor UI for easy modifications of the settings objects
- A split out developer settings functionality to keep gameplay and nitty-gritty details separately
- Most settings migrated out of game objects and into the new system
- An additional Editor utility for fetching the settings at editor runtime, for gizmos, visualization etc

Co-authored-by: Michal Pikulski <michal.a.pikulski@gmail.com>
Co-authored-by: AlexanderT <alexander@foolhardyhorizons.com>
Reviewed-on: #7

Assets/AddressableAssetsData/AddressableAssetSettings.asset

@@ -15,7 +15,7 @@ MonoBehaviour:
   m_DefaultGroup: 6f3207429a65b3e4b83935ac19791077
   m_currentHash:
     serializedVersion: 2
-    Hash: c0cf00979528ae95d3583c572e4eb343
+    Hash: 00000000000000000000000000000000
   m_OptimizeCatalogSize: 0
   m_BuildRemoteCatalog: 0
   m_CatalogRequestsTimeout: 0
@@ -61,6 +61,7 @@ MonoBehaviour:
   m_GroupAssets:
   - {fileID: 11400000, guid: efe7e1728e73e9546ac5dfee2eff524f, type: 2}
   - {fileID: 11400000, guid: 6e4927e7e19eef34b93dc2baa9e9e8e2, type: 2}
+  - {fileID: 11400000, guid: e25c7672a65b5974bb354fcfb2a8400c, type: 2}
   - {fileID: 11400000, guid: 7fcc03e584505ed4381983b6ebb1179d, type: 2}
   m_BuildSettings:
     m_LogResourceManagerExceptions: 1