gossip: Add `save_contact_info_time` metric (#4114) #8187

Job	Run time
android (ubuntu-20.04, x86_64-linux-android)	2m 22s
android (ubuntu-20.04, aarch64-linux-android)	2m 25s
android (ubuntu-20.04, i686-linux-android)	2m 21s
ios (macos-13, aarch64-apple-ios)	2m 55s
android (ubuntu-20.04, armv7-linux-androideabi)	2m 34s
ios (macos-13, x86_64-apple-ios)	3m 4s
ios (macos-13, aarch64-apple-darwin)	3m 28s
ios (macos-13, x86_64-apple-darwin)	3m 57s
error_reporting	0s
	23m 6s

Provide feedback