Added Project 1 IoT documentation & structure

[KasparByrne]

• Added some documentation covering the relevant usage and theory of GATT protocol for project 1.
• Created the general structure for the documentation of the bike code.
• Altered the structure of the Project 1 documentation folder to split IoT and VR into their own subfolders (VR is currently empty and does not show up).
• Added a warning to the start of the MQTT to Serial document warning that the VR headset does not have serial and hence we cannot use serial.
• Tested locally.