Initial linux agent and api functionality for enrolling servers

agent/internal/logs/cursor.go

@@ -0,0 +1,24 @@
+package logs
+
+import (
+	"os"
+	"strings"
+)
+
+func ReadCursor(path string) (string, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return "", nil
+		}
+		return "", err
+	}
+	return strings.TrimSpace(string(data)), nil
+}
+
+func WriteCursor(path string, cursor string) error {
+	if cursor == "" {
+		return nil
+	}
+	return os.WriteFile(path, []byte(cursor+"\n"), 0o600)
+}