Build

Add meson option to disable explicit EC keys tests #1446

Job	Run time
CI with software token (macos-14, softokn)	1m 38s
CI with software token (fedora, gcc, softokn)	3m 5s
CI with software token (macos-14, softhsm)	2m 2s
CI with software token (fedora, gcc, softhsm)	3m 53s
CI with software token (fedora, clang, softokn)	1m 18s
CI with software token (fedora, clang, softhsm)	2m 9s
CI with software token (debian, gcc, softokn)	3m 4s
CI with software token (debian, gcc, softhsm)	4m 9s
CI with software token (debian, clang, softokn)	1m 23s
CI with software token (debian, clang, softhsm)	2m 3s
CI with software token (centos, gcc, softokn)	3m 6s
CI with software token (centos, gcc, softhsm)	47s
CI with software token (centos, clang, softokn)	1m 42s
CI with software token (centos, clang, softhsm)	50s
CI with software token (ubuntu, gcc, softokn)	3m 2s
CI with software token (ubuntu, gcc, softhsm)	4m 22s
CI with software token (ubuntu, clang, softokn)	1m 20s
CI with software token (ubuntu, clang, softhsm)	1m 56s
	41m 49s

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