Added crash case 22524-collectfullname.swift
Added test case 22723-swift-lowering-silgenfunction-emitexprinto.swift
Updated hall of fame :-)
Change credits for bug #22524 which was discovered and reported by @zneak :-)

Thanks for contributing! :-)
Minimized test cases.
Add contribution guidelines.
Added test case 22722-swift-irgen-protocolinfo-getconformance.swift
Tried to clarify meaning of crash set #1 ("crashes/" dir).