`Intrinsic-test`: Supporting `LoongArch` behavioural testing#1900

Draft

madhav-madhusoodanan wants to merge 8 commits intorust-lang:masterfrom

madhav-madhusoodanan:intrinsic-test-loongarch-addition

Commits on Aug 5, 2025

feat: added a skeletal structure for loongarch in `intrinsic-test`
madhav-madhusoodanan
committed

Commits on Aug 12, 2025

feat: add C testfile compilation mechanism to loongarch
madhav-madhusoodanan
committed
feat: added rust test-file compilation mechanism for loongarch
madhav-madhusoodanan
committed