Corrected some template functions that manipulate memory and words in namespace embot::core::binary::word

[marcoaccame]

This PR corrects some template functions that are used by the amcfoc.mot board to move words (uint8_t, uint16_t, uint32_t uint64_t and their signed counterpart) to and from memory.

The functions can be useful for instance for placing into memory some words in little endian (or big endian) as in following code.

std::uint8_t dd[6] = {0};
auto e = embot::core::binary::word::Endianess::Little; // or embot::core::binary::word::Endianess::Big ...

int32_t value32 = 0x12345678;
embot::core::binary::word::load2memory<int32_t>(value32, &dd[0], e);
// now dd[] is filled w/ 0x78, 0x56, 0x34, 0x12, 0x00, 0x00

uint16_t value16 = 0xAABB;
embot::core::binary::word::load2memory<uint16_t>(value16, &dd[4]); 
// as default is embot::core::binary::word::Endianess::Little, 
// now dd[] is filled w/ 0x78, 0x56, 0x34, 0x12, 0xBB, 0xAA

Code Listing. Example of use of template function embot::core::binary::word::load2memory()

The change will affect only a future PR related to the amcfoc.mot application and nothing else, so it can be safely merged. Also, no change of versioning of the repo is required.