add codespell action (#18818)

Original work here, #18474,  refixed and updated.

internal/config/identity/openid/jwt_test.go

@@ -258,7 +258,7 @@ func TestExpCorrect(t *testing.T) {
 	if err := updateClaimsExpiry("3600", claimsMap.MapClaims); err != nil {
 		t.Error(err)
 	}
-	// Build simple toke with updated expiration claim
+	// Build simple token with updated expiration claim
 	token := jwtgo.NewWithClaims(jwtgo.SigningMethodHS256, claimsMap)
 	tokenString, err := token.SignedString(signKey)
 	if err != nil {

internal/config/identity/openid/provider/provider.go

@@ -53,7 +53,7 @@ var (
 	ErrAccessTokenExpired = errors.New("access_token expired or unauthorized")
 )
 
-// Provider implements indentity provider specific admin operations, such as
+// Provider implements identity provider specific admin operations, such as
 // looking up users, fetching additional attributes etc.
 type Provider interface {
 	LoginWithUser(username, password string) error

internal/config/identity/openid/providercfg.go

@@ -91,7 +91,7 @@ func (p *providerCfg) initializeProvider(cfgGet func(string) string, transport h
 		)
 		return err
 	default:
-		return fmt.Errorf("Unsupport vendor %s", keyCloakVendor)
+		return fmt.Errorf("Unsupported vendor %s", keyCloakVendor)
 	}
 }
 

internal/config/identity/plugin/config.go

@@ -197,7 +197,7 @@ func (h *metrics) accumRequestRTT(reqStartTime time.Time, rttMs float64, isSucce
 		}
 	}
 
-	// Round the reqest time *down* to whole minute.
+	// Round the request time *down* to whole minute.
 	reqTimeMinute := reqStartTime.Truncate(time.Minute)
 	if reqTimeMinute.After(h.currentMinute.statsTime) {
 		// Drop the last full minute now, since we got a request for a time we