Changed type of encodedBufferIndex to size_t to eliminate warning. It is
fine as a size_t as its only ever compared to another size_t and used as
an array index.
This new FW is build on the same codebasse than the actual InfiniTime. Only the display task is different (this allows to remove lvgl from the recovery fw, which is very heavy).
CMake builds and docker have been modified accordingly.
Note than the fw is converted into an image and then into a DFU in the cmake build (previously, it was only done in the
