toolbox: Add include of <stdbool.h>
toolbox: Replace Toolbox_Byte by byte_t and Toolbox_Size by size_t
toolbox: Add capacity bounds for Byte buffer
toolbox: Rename _Toolbox_ByteBuffer_uninit to _Toolbox_ByteBuffer_delete
toolbox: Replace Toolbox_Byte by byte_t

Toolbox_Byte_MAX has been replaced by BYTE_MAX and Toolbox_Byte_MIN has been replaced by BYTE_MIN.
toolbox: Add Element