Add support for accepting 0-RTT in TlsServerHandshaker

This adds support at the crypto handshake layer for supporting 0-RTT TLS
handshakes on the server. Part of this support includes receiving a signal
from the application layer, via a new method
QuicCryptoStream::SetServerApplicationStateForResumption. This method
replaces the previously client-only
QuicCryptoClientStream::OnApplicationState.

Introduce quic 0-rtt tls support, protected by quic_enable_zero_rtt_for_tls

PiperOrigin-RevId: 315331343
Change-Id: Ife83cf526be38bd4f5c8a3de0e6cd4c40be6f7ae
diff --git a/quic/core/tls_handshaker_test.cc b/quic/core/tls_handshaker_test.cc
index 5a2bd64..caf9a9c 100644
--- a/quic/core/tls_handshaker_test.cc
+++ b/quic/core/tls_handshaker_test.cc
@@ -192,6 +192,8 @@
   HandshakeState GetHandshakeState() const override {
     return handshaker()->GetHandshakeState();
   }
+  void SetServerApplicationStateForResumption(
+      std::unique_ptr<ApplicationState> /*application_state*/) override {}
 
   const std::vector<std::pair<std::string, EncryptionLevel>>& pending_writes() {
     return pending_writes_;