FFI: Add missing quiche_conn_is_dgram_send_queue_full(...) and quiche… #4624

Job	Run time
quiche	3m 36s
quiche (boringssl-boring-crate)	3m 43s
quiche_macos	2m 30s
quiche_ios (x86_64-apple-ios)	2m 4s
quiche_multiarch (aarch64-unknown-linux-gnu)	3m 28s
quiche_ios (aarch64-apple-ios)	2m 18s
quiche_multiarch (armv7-unknown-linux-gnueabihf)	3m 38s
quiche_windows (x86_64-pc-windows-msvc)	4m 45s
quiche_multiarch (i686-unknown-linux-gnu)	2m 17s
quiche_windows (i686-pc-windows-msvc)	3m 33s
docker	3m 10s
quiche_windows (x86_64-pc-windows-gnu)	5m 14s
http3_test	1m 31s
quiche_windows (i686-pc-windows-gnu)	5m 26s
nginx (1.16.1)	1m 2s
android_ndk_lts (aarch64-linux-android)	1m 24s
android_ndk_lts (armv7-linux-androideabi)	1m 29s
android_ndk_lts (x86_64-linux-android)	1m 33s
android_ndk_lts (i686-linux-android)	1m 57s
	54m 38s

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