feat: documentation and cleanup command

hcloudimages/contextlogger/context.go

@@ -9,10 +9,13 @@ type key int
 
 var loggerKey key
 
+// New saves the logger as a value to the context. This can then be retrieved through [From].
 func New(ctx context.Context, logger *slog.Logger) context.Context {
 	return context.WithValue(ctx, loggerKey, logger)
 }
 
+// From returns the [*slog.Logger] set on the context by [New]. If there is none,
+// it returns a no-op logger that discards any output it receives.
 func From(ctx context.Context) *slog.Logger {
 	if ctxLogger := ctx.Value(loggerKey); ctxLogger != nil {
 		if logger, ok := ctxLogger.(*slog.Logger); ok {