Use fast whitespace split if no quoted values are in line

[padix-key]

This PR introduces a shortcut for CIF line splitting (the speed limiting step of CIFFile) if the line contains no quoted value. This is the case for almost all lines.

[codspeed-hq]

CodSpeed Performance Report

Merging #722 will improve performances by 33.9%

_{Comparing padix-key:cif-performance (88bdf50) with main (0acb143)}

Summary

⚡ 3 improvements
✅ 44 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	padix-key:cif-performance	Change
⚡	benchmark_deserialize_pdbx[cif]	114.5 ms	90.7 ms	+26.15%
⚡	benchmark_get_structure[cif-False]	77 ms	57.5 ms	+33.9%
⚡	benchmark_get_structure[cif-True]	137.5 ms	117.9 ms	+16.61%