1.Update filament change gcode. Optimize the flushing and
wiping actions when changing filament
2.Upadte machine end gcoed.Avoid the print head from colliding
with the printed material at the end of printing
jira:NEW
Signed-off-by: XunZhangBambu <xun.zhang@bambulab.com>
Change-Id: I79868d41fbaa41269fe21644bee487556a7b66fe