1347 do away with serilog

[aharwood2]

This pull request updates the logging configuration for the application, simplifying the setup by removing Serilog and standardizing on console logging. It also adjusts logging levels for certain components in the production settings.

Logging configuration changes:

• Removed all Serilog-related packages from PPMTool.csproj, including Serilog, Serilog.Sinks.File, Serilog.Sinks.Console, and Serilog.Extensions.Logging.
• Replaced the Serilog-based logging setup in Program.cs with a simpler configuration that uses only the built-in console logger. All other logging providers are cleared before adding the console logger.

Logging level adjustments:

• Added a warning-level log filter for Microsoft.EntityFrameworkCore in appsettings.Production.json to reduce log verbosity in production.

[PhilBradbury]

Looks good from the code. Tricky to test easily until it's pushed to the Dev server.