IF: Add block extension which contains latest HotStuff commitment known to proposer #4349

Job	Run time
Discover Versions	2s
Run Platforms Workflow / Discover Platforms	3s
Run Platforms Workflow / Platform Matrix	2s
Run Platforms Workflow / Build Platforms	0s
Run Build Workflow / Build leap (ubuntu20)	7m 10s
Run Build Workflow / Build leap (ubuntu22)	7m 27s
NP Tests (ubuntu20)	5m 40s
NP Tests (ubuntu22)	4m 33s
Build leap-dev package (ubuntu20)	9m 25s
Build leap-dev package (ubuntu22)	8m 58s
Tests (ubuntu20)	3m 16s
Tests (ubuntu22)	3m 9s
LR Tests (ubuntu20)	23m 43s
LR Tests (ubuntu22)	23m 36s
libtester tests (ubuntu20, build-tree)	5m 28s
libtester tests (ubuntu20, make-dev-install)	8m 10s
libtester tests (ubuntu20, deb-install)	1m 50s
libtester tests (ubuntu22, build-tree)	5m 10s
libtester tests (ubuntu22, make-dev-install)	7m 48s
libtester tests (ubuntu22, deb-install)	4m 43s
All Required Tests Passed	1s
	2h 10m 14s

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