Fixes #325: Include Assembly Code in Manifest

[bhekster-relyance]

Issue #325 describes an issue trying to build with Python 3.12. The root cause is suggested by these error messages:

/usr/bin/ld: blosc/c-blosc/blosc/CMakeFiles/blosc_shared.dir//internal-complibs/zstd-1.5.2/decompress/huf_decompress.c.o: in function HUF_decompress4X1_usingDTable_internal_bmi2_asm': huf_decompress.c:(.text+0x2c2b): undefined reference to HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop'
/usr/bin/ld: blosc/c-blosc/blosc/CMakeFiles/blosc_shared.dir//internal-complibs/zstd-1.5.2/decompress/huf_decompress.c.o: in function HUF_decompress4X2_usingDTable_internal_bmi2_asm': huf_decompress.c:(.text+0x6a58): undefined reference to HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop'
/usr/bin/ld: blosc/c-blosc/blosc/libblosc.so.1.21.3: hidden symbol `HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop' isn't defined
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status

The “hidden symbol” message is a red herring. The real problem is that these symbols are defined in an Assembly language source file blosc/c-blosc/internal-complibs/zstd-1.5.2/decompress/huf_decompress_amd64.S which isn't being packaged in.

This Pull Request updates MANIFEST.in to recursively include all .S files.

[FrancescAlted]

LGTM. Thanks @bhekster-relyance !