lambda inferrer: support custom delegates #2815

Job	Run time
.NET unit tests (ubuntu-latest)	2m 9s
Build all projects without errors	11m 12s
Build published projects without warnings (Release)	1m 39s
.NET unit tests (windows-2022)	7m 26s
JS unit tests	1m 14s
Build published projects without warnings (Debug)	1m 50s
.NET unit tests (macOS-latest)	4m 53s
UI tests (chrome, ubuntu-latest, Production, Default)	13m 18s
UI tests (chrome, windows-2022, Development, Default)	24m 20s
UI tests (firefox, ubuntu-latest, Development, Default)	18m 29s
UI tests (firefox, ubuntu-latest, Production, Default)	17m 25s
UI tests (firefox, ubuntu-latest, Development, ExperimentalFeaturesTests)	17m 57s
UI tests (chrome, ubuntu-latest, Production, ExperimentalFeaturesTests)	13m 8s
	2h 15m 0s

Provide feedback