CONNECT-IP payload parse/serialization

Implement the payload format from RFC 9484, Section 6.

PiperOrigin-RevId: 586798600

build/source_list.json

diff --git a/build/source_list.json b/build/source_list.json
index 41946db..68779fa 100644
--- a/build/source_list.json
+++ b/build/source_list.json
@@ -12,6 +12,7 @@
     "quiche/common/capsule.h",
     "quiche/common/http/http_header_block.h",
     "quiche/common/http/http_header_storage.h",
+    "quiche/common/masque/connect_ip_datagram_payload.h",
     "quiche/common/masque/connect_udp_datagram_payload.h",
     "quiche/common/platform/api/quiche_bug_tracker.h",
     "quiche/common/platform/api/quiche_client_stats.h",
@@ -399,6 +400,7 @@
     "quiche/common/capsule.cc",
     "quiche/common/http/http_header_block.cc",
     "quiche/common/http/http_header_storage.cc",
+    "quiche/common/masque/connect_ip_datagram_payload.cc",
     "quiche/common/masque/connect_udp_datagram_payload.cc",
     "quiche/common/platform/api/quiche_hostname_utils.cc",
     "quiche/common/platform/api/quiche_mutex.cc",
@@ -1052,6 +1054,7 @@
     "quiche/common/capsule_test.cc",
     "quiche/common/http/http_header_block_test.cc",
     "quiche/common/http/http_header_storage_test.cc",
+    "quiche/common/masque/connect_ip_datagram_payload_test.cc",
     "quiche/common/masque/connect_udp_datagram_payload_test.cc",
     "quiche/common/platform/api/quiche_file_utils_test.cc",
     "quiche/common/platform/api/quiche_hostname_utils_test.cc",