Updating branch

Added multi-threaded server and simple client
Close #31

Delete executable files

Fixed data types

Fixed enum foodle_account_type_e

Foodle data types to handle data incoming from client side

Adding Foodle data types for data incoming from database server

Include foodle_client_types.h header

Include foodle_client_types.h header

Assembled source files for client-side and server-side

Added new struct delivery
Slightly modified struct item
Deleted several values from enum event_type
Adjusted structs to be compatible with DB

Added foodle_db directory from main branch
Added GUI directory from AzizFrontender branch

Updated src/
Updated mysql/
Added scripts/

Added two uppercase letters

Fixed path issue