add YAML serialization for ruleset

proxychain/requestmodifiers/modify_domain_with_regex.go

@@ -1,13 +1,18 @@
 package requestmodifiers
 
 import (
+	"fmt"
 	"regexp"
 
 	"ladder/proxychain"
 )
 
-func ModifyDomainWithRegex(match regexp.Regexp, replacement string) proxychain.RequestModification {
+func ModifyDomainWithRegex(matchRegex string, replacement string) proxychain.RequestModification {
+	match, err := regexp.Compile(matchRegex)
 	return func(px *proxychain.ProxyChain) error {
+		if err != nil {
+			return fmt.Errorf("RequestModification :: ModifyDomainWithRegex error => invalid match regex: %s - %s", matchRegex, err.Error())
+		}
 		px.Request.URL.Host = match.ReplaceAllString(px.Request.URL.Host, replacement)
 		return nil
 	}