add expr-lang.org support (use with -e)

cmd/root.go

@@ -21,6 +21,8 @@ import (
 	"fmt"
 	"io"
 	"os"
+
+	"codeberg.org/scip/ts/pkg/runexpr"
 )
 
 func Die(format string, err error) int {
@@ -36,6 +38,12 @@ func Main(output io.Writer) int {
 		return Die("failed to initialize", err)
 	}
 
+	if conf.Expr != "" {
+		runexpr.RunExpr(conf.Expr)
+
+		return 0
+	}
+
 	tp := NewTP(conf)
 
 	if err := tp.ProcessTimestamps(); err != nil {