Start toolbox restructuring

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Start restructuring load functions

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Add data load functions

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Shift some files to subdirectories

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Shift conversion functions to formats

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Move all files to subdirectories

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>