[performance] Implement loadUnaligned for big endian #584

Job	Run time
ASan (ubuntu-24.04)	10m 50s
Check without Sanitizer (ON)	9m 59s
ASan (macos-13)	15m 5s
Check without Sanitizer (OFF)	8m 47s
Check without Sanitizer and without ISA-L (ubuntu-24.04)	12m 49s
Clang-Tidy	5m 45s
Check without Sanitizer and without ISA-L (macos-12)	1s
Check without Sanitizer and without ISA-L (macos-13)	10m 32s
Check without Sanitizer and without ISA-L (windows-latest)	3m 39s
Check with Infer	9m 49s
Code Coverage	0s
Ibzip2 Tests (ubuntu-24.04)	2m 34s
Ibzip2 Tests (macos-13)	2m 1s
Ibzip2 Tests (macos-14)	55s
Safe-Stack (ubuntu-24.04)	4m 57s
Ibzip2 Tests (windows-latest)	3m 26s
Safe-Stack (macos-13)	11m 55s
TSan	14m 32s
UBSan (ubuntu-24.04)	7m 59s
UBSan (macos-13)	15m 22s
	2h 30m 57s

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