DSA update

Major improvements :

• release of a new structure: Branched Linked List
• revision of the DLL structs prototype
• tests for DLL and BDLL

Small improvements :

• modification of the semantic for a more readable system
• better organization of folders: docs/ for technicals documents, tests/ outside of src/ and util/ for metrics and other prototypes

On going improvements :

• benchmark
• test with csv files

v1.1.0

Start experimenting operation through nodes (adding two nodes to each other)

Linked List implementation

First release of Linked List