Added the datatype date, time and datetime
Moved all custom erros to a single file
Cleaned code to be more readable and created some small utils
Other stuffs that I dont recall. Basically preparing for the
relationship implementation
Removed the loop for the CLI, now just take some argument using the
binary. May come back to while loop if I need to keep like the file
engine between session. To run query in parallel.
Moved printError and send to utils and removed duplicate of them.
Organized FileEngine better.
Put the function that convert string to value in a seperate file.
Fix some synthax and make it smaller. Removed unused functions too
Started by doing a SchemaEngine but at the end I just put everything
inside the FileEngine.
Now you can use 'schema init path/to/schema' to initialize the struct
folders and first data file, Also save a copy of the schema in a file in
the ZipponDB folder.
Created a new folder to clean a bit the repo, put the file and schema
engine inside. As those and Parser depend on the types.zig, I also add
this folder inside the new engines folder
