CMS and PKCS7: add support for EdDSA with Edwards curves 25519 and 44… #970

Job	Run time
compiler (gcc-7, ubuntu-20.04)	6m 30s
compiler (gcc-8, ubuntu-20.04)	6m 21s
compiler (gcc-9, ubuntu-20.04)	6m 35s
compiler (gcc-10, ubuntu-20.04)	6m 35s
compiler (gcc-11, ubuntu-22.04)	7m 37s
compiler (gcc-12, ubuntu-22.04)	7m 11s
compiler (gcc-13, ubuntu-22.04, ubuntu-toolchain-r/test)	7m 13s
compiler (clang-6.0, ubuntu-20.04)	8m 34s
compiler (clang-7, ubuntu-20.04)	6m 32s
compiler (clang-8, ubuntu-20.04)	6m 35s
compiler (clang-9, ubuntu-20.04)	6m 55s
compiler (clang-10, ubuntu-20.04)	6m 22s
compiler (clang-11, ubuntu-20.04)	6m 39s
compiler (clang-12, ubuntu-20.04)	6m 30s
compiler (clang-13, ubuntu-22.04)	6m 37s
compiler (clang-14, ubuntu-22.04)	7m 6s
compiler (clang-15, ubuntu-22.04, jammy)	6m 48s
compiler (clang-16, ubuntu-22.04, jammy)	6m 47s
	2h 3m 27s

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