chore: groups varnamelen files to a package

Author: ldez

test/testdata/varnamelen.go renamed to pkg/golinters/varnamelen/testdata/varnamelen.go

@@ -1,4 +1,4 @@
-package golinters
+package varnamelen
 
 import (
 	"strconv"
@@ -11,7 +11,7 @@ import (
 	"github.com/golangci/golangci-lint/pkg/goanalysis"
 )
 
-func NewVarnamelen(settings *config.VarnamelenSettings) *goanalysis.Linter {
+func New(settings *config.VarnamelenSettings) *goanalysis.Linter {
 	analyzer := varnamelen.NewAnalyzer()
 	cfg := map[string]map[string]any{}
 

pkg/golinters/varnamelen.go renamed to pkg/golinters/varnamelen/varnamelen.go

@@ -0,0 +1,11 @@
+package varnamelen
+
+import (
+	"testing"
+
+	"github.com/golangci/golangci-lint/test/testshared/integration"
+)
+
+func TestFromTestdata(t *testing.T) {
+	integration.RunTestdata(t)
+}

pkg/golinters/varnamelen/varnamelen_integration_test.go

@@ -103,6 +103,7 @@ import (
 	"github.com/golangci/golangci-lint/pkg/golinters/unparam"
 	"github.com/golangci/golangci-lint/pkg/golinters/unused"
 	"github.com/golangci/golangci-lint/pkg/golinters/usestdlibvars"
+	"github.com/golangci/golangci-lint/pkg/golinters/varnamelen"
 	"github.com/golangci/golangci-lint/pkg/golinters/whitespace"
 	"github.com/golangci/golangci-lint/pkg/golinters/zerologlint"
 	"github.com/golangci/golangci-lint/pkg/lint/linter"
@@ -786,7 +787,7 @@ func (LinterBuilder) Build(cfg *config.Config) ([]*linter.Config, error) {
 			WithURL("https://github.com/opennota/check").
 			Deprecated("The owner seems to have abandoned the linter.", "v1.49.0", "unused"),
 
-		linter.NewConfig(golinters.NewVarnamelen(&cfg.LintersSettings.Varnamelen)).
+		linter.NewConfig(varnamelen.New(&cfg.LintersSettings.Varnamelen)).
 			WithSince("v1.43.0").
 			WithPresets(linter.PresetStyle).
 			WithLoadForGoAnalysis().