Full big num implementation with preferred serialization and 65-bit negs #294

Job	Run time
• gcc • ubuntu:22.04	33s
-DQCBOR_DISABLE_NON_INTEGER_LABELS • gcc • ubuntu:22.04	33s
-DQCBOR_DISABLE_TAGS • gcc • ubuntu:22.04	28s
-DUSEFULBUF_DISABLE_ALL_FLOAT • gcc • ubuntu:22.04	34s
-DQCBOR_DISABLE_FLOAT_HW_USE • gcc • ubuntu:22.04	25s
-DQCBOR_DISABLE_PREFERRED_FLOAT • gcc • ubuntu:22.04	32s
-DQCBOR_CONFIG_DISABLE_EXP_AND_MANTISSA • gcc • ubuntu:22.04	28s
-DQCBOR_DISABLE_ENCODE_USAGE_GUARDS • gcc • ubuntu:22.04	26s
-DQCBOR_DISABLE_INDEFINITE_LENGTH_STRINGS • gcc • ubuntu:22.04	24s
-DQCBOR_DISABLE_INDEFINITE_LENGTH_ARRAYS • gcc • ubuntu:22.04	49s
-DQCBOR_DISABLE_UNCOMMON_TAGS • gcc • ubuntu:22.04	26s
• clang • ubuntu:22.04	33s
-DQCBOR_DISABLE_NON_INTEGER_LABELS • clang • ubuntu:22.04	37s
-DQCBOR_DISABLE_TAGS • clang • ubuntu:22.04	36s
-DUSEFULBUF_DISABLE_ALL_FLOAT • clang • ubuntu:22.04	34s
-DQCBOR_DISABLE_FLOAT_HW_USE • clang • ubuntu:22.04	39s
-DQCBOR_DISABLE_PREFERRED_FLOAT • clang • ubuntu:22.04	48s
-DQCBOR_CONFIG_DISABLE_EXP_AND_MANTISSA • clang • ubuntu:22.04	42s
-DQCBOR_DISABLE_ENCODE_USAGE_GUARDS • clang • ubuntu:22.04	48s
-DQCBOR_DISABLE_INDEFINITE_LENGTH_STRINGS • clang • ubuntu:22.04	36s
-DQCBOR_DISABLE_INDEFINITE_LENGTH_ARRAYS • clang • ubuntu:22.04	36s
-DQCBOR_DISABLE_UNCOMMON_TAGS • clang • ubuntu:22.04	34s
	12m 41s

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