Fix big endian support, add CI workflow #162

Job	Run time
Resolve wolfSSL version matrix	2s
latest stable (v5.9.2-stable)	46s
master (--enable-pqc)	1m 51s
master (no flag, opt-in check)	2m 6s
pre-PQC (v5.8.0-stable)	51s
master (--enable-mldsa only)	2m 11s
master (--enable-mlkem only)	1m 52s
	9m 39s

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