docs: add release notes for v22.0.0 #521

Job	Run time
Build Image	21s
Build Dependencies (arm-linux, arm-linux-gnueabihf)	1m 14s
Build Dependencies (linux64, x86_64-pc-linux-gnu)	1m 18s
Build (arm-linux, arm-linux-gnueabihf, arm-linux)	4m 19s
Build (linux64, x86_64-pc-linux-gnu, linux64)	6m 51s
Build (linux64_tsan, x86_64-pc-linux-gnu, linux64)	11m 52s
Build (linux64_ubsan, x86_64-pc-linux-gnu, linux64)	8m 25s
Build (linux64_fuzz, x86_64-pc-linux-gnu, linux64)	15m 38s
Build (linux64_cxx20, x86_64-pc-linux-gnu, linux64)	7m 23s
Build (linux64_sqlite, x86_64-pc-linux-gnu, linux64)	7m 13s
Build (linux64_nowallet, x86_64-pc-linux-gnu, linux64)	7m 20s
	1h 11m 54s

Provide feedback