feat: add infixWriter for formatted output

Changes:

- Introduced a new `infixWriter` struct that allows for custom prefix and suffix when writing output.
- Implemented the `Write` method to format the output by applying the prefix and suffix around the written buffer each time a new line is encountered.
- This new functionality aids in creating more structured output for logging or display purposes.

Author: alexec

internal/infix_writer.go

@@ -0,0 +1,25 @@
+package internal
+
+import (
+	"bytes"
+	"fmt"
+)
+
+type infixWriter struct {
+	prefix string
+	suffix string
+	buffer bytes.Buffer
+}
+
+func (w *infixWriter) Write(p []byte) (int, error) {
+	for _, b := range p {
+		if b == '\n' {
+			fmt.Printf("%s%s%s\n", w.prefix, w.buffer.String(), w.suffix)
+			w.buffer.Reset()
+		} else {
+			w.buffer.WriteByte(b)
+		}
+	}
+
+	return len(p), nil
+}