Move rustls-libssl/ to the repo root #258

Job	Run time
Clippy nightly (optional)	35s
Clang Tidy	9s
Clippy	33s
Build+test (stable, ubuntu-24.04)	2m 13s
Check for documentation errors	1m 2s
Build+test (stable, ubuntu-22.04)	1m 45s
Miri	1m 2s
Build+test (beta, ubuntu-24.04)	2m 40s
Format	14s
Build+test (beta, ubuntu-22.04)	1m 41s
Build+test (nightly, ubuntu-24.04)	1m 59s
Packaging	3m 46s
Produce release packages (fedora, 40, rpm)	3m 9s
Build+test (nightly, ubuntu-22.04)	3m 25s
Valgrind	2m 21s
Produce release packages (ubuntu, 24.04, deb)	2m 16s
	28m 50s

Provide feedback