Local haemostatic agent based on sterile oxidized cellulose or oxidized regenerated cellulose in combination with collagen, hyaluronic acid or b-glucan in the form of reticulum, powder, gel or paste; sterile resorbable biodressing made of salts of oxidized cellulose or oxidized regenerated cellulose, combined with collagen, hyaluronic acid, b-glucan, chitosan, or chlorohexidine, for the treatment of acute and chronic wounds in the form of powder, matrix, paste, gel or glue