add sub command `runv --template /path_to_template manage remove-template`
add sub command `runv --template /path_to_template manage remove-template`

Signed-off-by: Lai Jiangshan <b337eedf453972390e4695e362aeea2634ef4e0c@gmail.com>

feiskyer/runv,jinfenw/runv,hyperhq/runv,gao-feng/runv,gnawux/runv,bergwolf/runv,gao-feng/runv,laijs/runv,hyperhq/runv,gnawux/runv,wrouesnel/runv,gnawux/runv,bergwolf/runv,feiskyer/runv,jinfenw/runv,wrouesnel/runv,laijs/runv,bergwolf/runv,gao-feng/runv,laijs/runv,jinfenw/runv,hyperhq/runv