Introduce version in Bootloader + COMMAND_GET_VERSION
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# On branch main
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# Changes to be committed:
#	modified:   boot_loader/bl_commands.h
#	modified:   boot_loader/bl_link.sct
#	modified:   boot_loader/bl_main.c
#	new file:   boot_loader/bl_version.c
#	new file:   boot_loader/bl_version.h
#	modified:   boot_serial/boot_serial.uvopt
#	modified:   boot_serial/boot_serial.uvproj
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# Untracked files:
#	boot_serial/boot_serial.uvgui_DELL.bak
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