ci: use gci linter (#5708)

* use gofmput to format code

* use gci to format imports

* reconfigure gci

* linter autofixes

* rearrange imports a little

* export GOOS=windows golangci-lint run ./... --fix

modules/caddyhttp/caddyauth/basicauth.go

@@ -24,8 +24,9 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/caddyserver/caddy/v2"
 	"golang.org/x/sync/singleflight"
+
+	"github.com/caddyserver/caddy/v2"
 )
 
 func init() {

modules/caddyhttp/caddyauth/caddyauth.go

@@ -18,9 +18,10 @@ import (
 	"fmt"
 	"net/http"
 
+	"go.uber.org/zap"
+
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
-	"go.uber.org/zap"
 )
 
 func init() {

modules/caddyhttp/caddyauth/command.go

@@ -22,10 +22,12 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/caddyserver/caddy/v2"
-	caddycmd "github.com/caddyserver/caddy/v2/cmd"
 	"github.com/spf13/cobra"
 	"golang.org/x/term"
+
+	caddycmd "github.com/caddyserver/caddy/v2/cmd"
+
+	"github.com/caddyserver/caddy/v2"
 )
 
 func init() {

modules/caddyhttp/caddyauth/hashes.go

@@ -18,9 +18,10 @@ import (
 	"crypto/subtle"
 	"encoding/base64"
 
-	"github.com/caddyserver/caddy/v2"
 	"golang.org/x/crypto/bcrypt"
 	"golang.org/x/crypto/scrypt"
+
+	"github.com/caddyserver/caddy/v2"
 )
 
 func init() {