add token service, sqlite driver and test

internal/token/service.go

@@ -0,0 +1,30 @@
+package token
+
+import (
+	"fmt"
+	"time"
+)
+
+type TokenStore interface {
+	revoke(tokenID string, expiresAt time.Time) error
+	isRevoked(tokenID string) (bool, error)
+}
+
+type TokenService struct {
+	store TokenStore
+}
+
+func NewTokenService(store TokenStore) (*TokenService, error) {
+	if store == nil {
+		return nil, fmt.Errorf("store is nil")
+	}
+	return &TokenService{store: store}, nil
+}
+
+func (s *TokenService) Revoke(jti string, exp time.Time) error {
+	return s.store.revoke(jti, exp)
+}
+
+func (s *TokenService) IsRevoked(jti string) (bool, error) {
+	return s.store.isRevoked(jti)
+}