richard/projet_court: Réimplémentation du programme DSSP en Python

Réimplémentation du programme DSSP en Python

Thomas Forest e363f37ce0 Improved bridges exhaustive search		6 lat temu
..
atom.py	Improved bridges exhaustive search	6 lat temu
dssp.py	Improved bridges exhaustive search	6 lat temu
geometry.py	Improved bridges exhaustive search	6 lat temu
pdb.py	hydrogen interaction formula + turns and bridges first implementation	6 lat temu
structure.py	Improved bridges exhaustive search	6 lat temu