Add gocritic linter (#1324)

* Add gocritic linter

`gocritic` provides diagnostics that check for bugs, performance, and style issues

We disable the following checks:

- commentFormatting
- captLocal
- deprecatedComment

This PR contains many `//nolint:gocritic` to disable `appendAssign`.

client/internal/auth/device_flow.go

@@ -4,12 +4,13 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"github.com/netbirdio/netbird/client/internal"
 	"io"
 	"net/http"
 	"net/url"
 	"strings"
 	"time"
+
+	"github.com/netbirdio/netbird/client/internal"
 )
 
 // HostedGrantType grant type for device flow on Hosted
@@ -174,7 +175,7 @@ func (d *DeviceAuthorizationFlow) WaitToken(ctx context.Context, info AuthFlowIn
 				if tokenResponse.Error == "authorization_pending" {
 					continue
 				} else if tokenResponse.Error == "slow_down" {
-					interval = interval + (3 * time.Second)
+					interval += (3 * time.Second)
 					ticker.Reset(interval)
 					continue
 				}