feat: automatic module directories (#1315)

sample-monorepo/a/go.mod

@@ -0,0 +1,3 @@
+module github.com/golangci/actiona
+
+go 1.24.0

sample-monorepo/a/sample.go

@@ -0,0 +1,26 @@
+// Package sample is used as test input for golangci action.
+package sample
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+)
+
+// Hash~
+func Hash(data string) string {
+	retError()
+	retError2()
+
+	h := md5.New()
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func retError() error {
+	return errors.New("err")
+}
+
+func retError2() error {
+	return errors.New("err2")
+}

sample-monorepo/a/suba/go.mod

@@ -0,0 +1,3 @@
+module github.com/golangci/actiona/suba
+
+go 1.24.0

sample-monorepo/a/suba/sample.go

@@ -0,0 +1,26 @@
+// Package sample is used as test input for golangci action.
+package sample
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+)
+
+// Hash~
+func Hash(data string) string {
+	retError()
+	retError2()
+
+	h := md5.New()
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func retError() error {
+	return errors.New("err")
+}
+
+func retError2() error {
+	return errors.New("err2")
+}