Declare types in namespaces (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1050)

Rename type name AllowPrivateMessagesFromEnum so that it does not end in 'Enum' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Rename type name GameCollection so that it does not end in 'Collection' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Member 'saveRenameInProgress' is explicitly initialized to its default value (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1805)

Use 'ArgumentNullException.ThrowIfNull' instead of explicitly throwing a new exception instance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1510)

The behavior of 'int.ToString()' could vary based on the current user's locale settings. Replace this call in 'ClientConfiguration.GetThemeInfoFromIndex(int)' with a call to 'int.ToString(IFormatProvider)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)

Prefer a 'TryGetValue' call over a Dictionary indexer access guarded by a 'ContainsKey' check to avoid double lookup (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1854)

Prefer a 'TryGetValue' call over a Dictionary indexer access guarded by a 'ContainsKey' check to avoid double lookup (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1854)

Prefer a 'TryGetValue' call over a Dictionary indexer access guarded by a 'ContainsKey' check to avoid double lookup (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1854)