Having this set to "none" disabled the IDE's option to add braces, whereas "silent" lets it do it on the user's request while still not suggesting it on its own.
- The DEFAULT_PRIVATE_MODIFIER behaviour is now handled by the .editorconfig file via `dotnet_style_require_accessibility_modifiers = omit_if_default:warning`.
Also added `dotnet_diagnostic.IDE0040.severity = warning` there to raise compile-time errors in the CI.
- The field naming conventions seem to already be covered by (some) analyzer rules (checked in both VS and VSCode) - IDE1006/SA1306 and SA1307.
