SVGHMI: Systematically save HMI Tree in build directory as hmitree.xml when building, so that HMI Tree can be displayed when re-opening project, without having to build

[main]
host = https://www.transifex.com

[beremiz-ide.beremiz]
file_filter = Beremiz_<lang>.po
minimum_perc = 0
source_file = messages.pot
source_lang = en
type = PO