Creating a custom logger

To demonstrate a custom logger, let's use a small simple logger I created that is able to colorize log entries with a specific log level in the console. This is called ColoredConsoleLogger and will be added and created using LoggerProvider, which we also need to write for ourselves. To specify the color and the log level to colorize, we need to add a configuration class.

In the next snippets, all three parts (Logger, LoggerProvider, and Configuration) are shown:

1. Let's create the configuration class of our logger. We will call it ColoredConsoleLoggerConfiguration. This class contains three properties to define – LogLevel, EventId, and Color that can be set:

   public class ColoredConsoleLoggerConfiguration
   {
       public LogLevel LogLevel { get; set; } = 
         LogLevel.Warning;
       public int EventId { get; set; } = 0;
       public ConsoleColor Color...