[SOFTWARE] Enable g++ optimisations
[SOFTWARE] Improve README
[SOFTWARE] Add some infos
[SOFTWARE] Enable the user to choose the amount of RAM and FLASH and choose the correct startup script
[SOFTWARE] Change obj dependancies mechanism and make use of FreeRTOS being optionnal
[SOFTWARE] Add linker script template
[SOFTWARE] Keep comments when preprocessing linker script
[SOFTWARE] Move FreeRTOS to Operating_Systems directory
[SOFTWARE] Fix some mistakes
[SOFTWARE] TODO