Rust

Add FromRaw impl for some curve points #381

Job	Run time
check	28s
check-alloc	23s
check-all	39s
check-nostd	25s
build-wasm-nostd	31s
build-wasm	4m 24s
check-changelog	3s
check-doc	39s
check-semver (generic-ec, all-features)	2m 45s
clippy	29s
clippy-nostd	25s
check-semver (generic-ec, only-explicit-features)	2m 33s
check-semver (generic-ec-core, all-features)	2m 33s
clippy-tests	40s
check-semver (generic-ec-core, only-explicit-features)	2m 27s
fmt	6s
check-semver (generic-ec-curves, all-features)	2m 40s
check-semver (generic-ec-curves, only-explicit-features)	2m 30s
test	1m 14s
check-semver (generic-ec-zkp, all-features)	2m 38s
check-semver (generic-ec-zkp, only-explicit-features)	2m 36s
	31m 8s

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