tls13: add helpers to manipulate ticket_flags

Add helper functions to get/set/clear ticket_flags.

Signed-off-by: Pengyu Lv <pengyu.lv@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 16eccfc..25844d3 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2719,4 +2719,25 @@
                                      const char *hostname);
 #endif
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
+static inline uint8_t mbedtls_ssl_tls13_session_get_ticket_flags(
+    mbedtls_ssl_session *session, uint8_t flags)
+{
+    return session->ticket_flags &
+           (flags & MBEDTLS_SSL_TLS1_3_TICKET_FLAGS_MASK);
+}
+
+static inline void mbedtls_ssl_tls13_session_set_ticket_flags(
+    mbedtls_ssl_session *session, uint8_t flags)
+{
+    session->ticket_flags |= (flags & MBEDTLS_SSL_TLS1_3_TICKET_FLAGS_MASK);
+}
+
+static inline void mbedtls_ssl_tls13_session_clear_ticket_flags(
+    mbedtls_ssl_session *session, uint8_t flags)
+{
+    session->ticket_flags &= ~(flags & MBEDTLS_SSL_TLS1_3_TICKET_FLAGS_MASK);
+}
+#endif
+
 #endif /* ssl_misc.h */