feat: use db store for consent

internal/repository/memory/store.go

@@ -12,6 +12,7 @@ type Store struct {
 	mu           sync.RWMutex
 	sessions     map[string]repository.Session
 	oidcSessions map[string]repository.OidcSession
+	oidcConsents map[string]repository.OidcConsent
 }
 
 // New returns a new empty in-memory Store.
@@ -19,5 +20,6 @@ func New() repository.Store {
 	return &Store{
 		sessions:     make(map[string]repository.Session),
 		oidcSessions: make(map[string]repository.OidcSession),
+		oidcConsents: make(map[string]repository.OidcConsent),
 	}
 }