Refactor Logger (#13294)

Refactor Logger to make a logger interface and make it possible to
wrap loggers for specific purposes.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

modules/log/level.go

@@ -73,6 +73,16 @@ func (l Level) String() string {
 	return "info"
 }
 
+// Color returns the color string for this Level
+func (l Level) Color() *[]byte {
+	color, ok := levelToColor[l]
+	if ok {
+		return &(color)
+	}
+	none := levelToColor[NONE]
+	return &none
+}
+
 // MarshalJSON takes a Level and turns it into text
 func (l Level) MarshalJSON() ([]byte, error) {
 	buffer := bytes.NewBufferString(`"`)