Adding colorizing support

Now can use `colorize` package to color you styled messages:
```D
        alias StrictLogger = StyledStrictLogger!(LoggingLevel
                        , LoggingLevel.Debug,   "Debug:".color(fg.light_magenta) ~ " %1$s",   "[%2$s]: Debug: %1$s"
                        , LoggingLevel.Notice,  "Notice:".color(fg.light_green) ~ " %1$s",  "[%2$s]: Notice: %1$s"
                        , LoggingLevel.Warning, "Warning:".color(fg.light_yellow) ~ " %1$s", "[%2$s]: Warning: %1$s"
                        , LoggingLevel.Fatal,   "Fatal:".color(fg.light_red) ~ " %1$s",   "[%2$s]: Fatal: %1$s"
                        , LoggingLevel.Muted,   "",              ""
                        );
```

And to use colorized version of the library (the default behavior doesn't changed):
```JSON
{
	...
	"dependencies": {
		"dlogg": ">=0.3.2"
	},
	"subConfigurations": {
		"dlogg": "colorized"
	}
}
```