This program is used to merge multiple Go template files.
go install github.com/Napat/golang-merge-templates@latest
golang-merge-templates $OUTOUT <MAIN_TEMPLATE> <TEMPLATE_1> [<$TEMPLATE_2> ... ]
golang-merge-templates output.html sampledata/main.tpl sampledata/template_1.tpl sampledata/template_2.tpl