Move folders package into libs (#1184)

## Changes

This is the last top-level package that doesn't need to be top-level.

bundle/bundle.go

@@ -16,7 +16,7 @@ import (
 	"github.com/databricks/cli/bundle/config"
 	"github.com/databricks/cli/bundle/env"
 	"github.com/databricks/cli/bundle/metadata"
-	"github.com/databricks/cli/folders"
+	"github.com/databricks/cli/libs/folders"
 	"github.com/databricks/cli/libs/git"
 	"github.com/databricks/cli/libs/locker"
 	"github.com/databricks/cli/libs/log"

bundle/root.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/databricks/cli/bundle/config"
 	"github.com/databricks/cli/bundle/env"
-	"github.com/databricks/cli/folders"
+	"github.com/databricks/cli/libs/folders"
 )
 
 // getRootEnv returns the value of the bundle root environment variable

cmd/labs/project/installed.go

@@ -8,8 +8,8 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/databricks/cli/folders"
 	"github.com/databricks/cli/libs/env"
+	"github.com/databricks/cli/libs/folders"
 	"github.com/databricks/cli/libs/log"
 )
 

libs/folders/folders_test.go

@@ -13,7 +13,7 @@ func TestFindDirWithLeaf(t *testing.T) {
 	wd, err := os.Getwd()
 	require.NoError(t, err)
 
-	root := filepath.Join(wd, "..")
+	root := filepath.Join(wd, "..", "..")
 
 	// Find from working directory should work.
 	{

libs/git/repository.go

@@ -7,7 +7,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/databricks/cli/folders"
+	"github.com/databricks/cli/libs/folders"
 )
 
 const gitIgnoreFileName = ".gitignore"