Add xoroshiro128++ PRNG

Xoroshiro128++ is a fast non-cryptographic random generator.
Reference implementation is available at https://prng.di.unimi.it/

Co-Authored-By: Pieter Wuille <pieter@wuille.net>

test/sanitizer_suppressions/ubsan

@@ -53,6 +53,7 @@ unsigned-integer-overflow:policy/fees.cpp
 unsigned-integer-overflow:prevector.h
 unsigned-integer-overflow:script/interpreter.cpp
 unsigned-integer-overflow:txmempool.cpp
+unsigned-integer-overflow:xoroshiro128plusplus.h
 implicit-integer-sign-change:compat/stdin.cpp
 implicit-integer-sign-change:compressor.h
 implicit-integer-sign-change:crypto/
@@ -69,3 +70,4 @@ shift-base:crypto/
 shift-base:hash.cpp
 shift-base:streams.h
 shift-base:util/bip32.cpp
+shift-base:xoroshiro128plusplus.h