fix compile warnings - HelioSpring, Strix, Mode2Flux packed alignment of 4 same as uint32

[nerdCopter]

• needs thorough testing
• flashed unsoldered FC, still works.
• do not know the full ramifications of this, but fixes compiler warnings
• ref: https://stackoverflow.com/questions/11770451/what-is-the-meaning-of-attribute-packed-aligned4

fixes:

./src/main/drivers/accgyro/accgyro_imuf9001.c: In function 'imuf9001SendReceiveCommand':
./src/main/drivers/accgyro/accgyro_imuf9001.c:215:5: warning: converting a packed 'imufCommand_t' {aka 'struct imufCommand'} pointer (alignment 1) to a 'uint32_t' {aka 'long unsigned int'} pointer (alignment 4) may result in an unaligned pointer value [-Waddress-of-packed-member]
  215 |     command.crc     = getCrcImuf9001((uint32_t *)&command, 11);;
      |     ^~~~~~~
In file included from ./src/main/drivers/accgyro/accgyro_imuf9001.c:29:
./src/main/drivers/accgyro/accgyro_imuf9001.h:45:16: note: defined here
   45 | typedef struct imufCommand {
      |                ^~~~~~~~~~~
./src/main/drivers/accgyro/accgyro_imuf9001.c:221:17: warning: converting a packed 'imufCommand_t' {aka 'struct imufCommand'} pointer (alignment 1) to a 'uint32_t' {aka 'long unsigned int'} pointer (alignment 4) may result in an unaligned pointer value [-Waddress-of-packed-member]
  221 |                 crcCalc = getCrcImuf9001((uint32_t *)reply, 11);
      |                 ^~~~~~~
In file included from ./src/main/drivers/accgyro/accgyro_imuf9001.c:29:
./src/main/drivers/accgyro/accgyro_imuf9001.h:45:16: note: defined here
   45 | typedef struct imufCommand {
      |                ^~~~~~~~~~~
./src/main/drivers/accgyro/accgyro_imuf9001.c:227:25: warning: converting a packed 'imufCommand_t' {aka 'struct imufCommand'} pointer (alignment 1) to a 'uint32_t' {aka 'long unsigned int'} pointer (alignment 4) may result in an unaligned pointer value [-Waddress-of-packed-member]
  227 |                         command.crc     = getCrcImuf9001((uint32_t *)&command, 11);
      |                         ^~~~~~~
In file included from ./src/main/drivers/accgyro/accgyro_imuf9001.c:29:
./src/main/drivers/accgyro/accgyro_imuf9001.h:45:16: note: defined here
   45 | typedef struct imufCommand {
      |                ^~~~~~~~~~~
./src/main/drivers/accgyro/accgyro_imuf9001.c:240:29: warning: converting a packed 'imufCommand_t' {aka 'struct imufCommand'} pointer (alignment 1) to a 'uint32_t' {aka 'long unsigned int'} pointer (alignment 4) may result in an unaligned pointer value [-Waddress-of-packed-member]
  240 |                             crcCalc = getCrcImuf9001((uint32_t *)reply, 11);
      |                             ^~~~~~~
In file included from ./src/main/drivers/accgyro/accgyro_imuf9001.c:29:
./src/main/drivers/accgyro/accgyro_imuf9001.h:45:16: note: defined here
   45 | typedef struct imufCommand {
      |                ^~~~~~~~~~~

BUT, maybe we do NOT want this: https://cs50.stackexchange.com/questions/1337/what-does-attribute-packed-do 🤷‍♂️

What are the ramifications of not doing it on both sides? https://github.com/emuflight/imu-f/blob/master/src/board_comm/board_comm.h#L41-L55