boards: stm32: added nucleo-h745zi-q support
boards: stm32: added nucleo-h745zi-q support

added manifest file

Signed-off-by: Alexander Kozhinov <50ebfee6d1ce1a972d29b0828604ccbde3f54ee7@yandex.com>

platformio/platform-ststm32,platformio/platform-ststm32