add interface to readme

.timer.toml

@@ -1,3 +1,5 @@
 ## dates and their corresponding seconds been here :)
 [24-11-15]
 u80864958_at_u80864958 = 979
+[25-03-11]
+schreifuchs_at_archibald = 195

README.md

@@ -1,3 +1,24 @@
 # logger
 
-Just a simple logger
+Just a simple logger
+
+## Logger interfaces
+Full:
+```go
+type Logger interface {
+    Debug(a ...any) 
+    Debugf(format string, a ...any) 
+
+    Info(a ...any) 
+    Infof(format string, a ...any) 
+
+    Warn(str ...any) 
+    Warnf(format string, a ...any) 
+
+    Error(a ...any) 
+    Errorf(format string, a ...any) 
+
+    Fatal(code int, a ...any) 
+    Fatalf(code int, format string, a ...any) 
+}
+```

log.go

@@ -2,6 +2,7 @@ package logger
 
 import (
 	"fmt"
+	"os"
 
 	"git.schreifuchs.ch/schreifuchs/logger/lvl"
 )
@@ -59,3 +60,15 @@ func (l *Logger) Error(a ...any) {
 func (l *Logger) Errorf(format string, a ...any) {
 	l.Logf(lvl.Error, format, a...)
 }
+
+// Fatal logs directly do stdout and exis the application with given code.
+func (l *Logger) Fatal(code int, a ...any) {
+	fmt.Println("Fatal:", fmt.Sprint(a...))
+	os.Exit(code)
+}
+
+// Fatalf logs formated directly do stdout and exis the application with given code.
+func (l *Logger) Fatalf(code int, format string, a ...any) {
+	fmt.Println("Fatal:", fmt.Sprintf(format, a...))
+	os.Exit(code)
+}