Rename EcPublicKeyX509Der to PublicKeyX509Der (#325) #49

Job	Run time
Cross-platform build (stable, macos-13-xlarge, aarch64-apple-ios-sim)	1m 39s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, arm-unknown-linux-gnueabihf)	30m 2s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, aarch64-unknown-linux-gnu)	28m 33s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, i686-unknown-linux-gnu)	8m 13s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, powerpc64le-unknown-linux-gnu)	34m 53s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, riscv64gc-unknown-linux-gnu)	1h 16m 27s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, arm-linux-androideabi)	28m 58s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, armv7-linux-androideabi)	26m 56s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, aarch64-linux-android)	25m 38s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, powerpc64-unknown-linux-gnu)	32m 36s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, powerpc-unknown-linux-gnu)	43m 1s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, x86_64-unknown-linux-musl)	8m 17s
aws-lc-rs cross tests (1.72.1, ubuntu-latest, aarch64-unknown-linux-musl)	28m 50s
	6h 14m 3s

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