Add FormattableString Support to Logging Methods #4698

Add support for FormattableString to logging methods (Error, Warning, Information, Verbose, Debug) to enable type-safe string interpolation.

Example

// Current
Information("Processing {0} files in {1}", fileCount, duration);

// Proposed
Information($"Processing {fileCount} files in {duration}");

Add overloads accepting FormattableString and FormattableLogAction for all logging methods.