[WIP] Add in TODO.org item about settings migrator scripts

* Add item in TODO.org about settings migrator
* Add item about crossplatform Makefile build
* Wrote perl-stub for settings export
* Wrote GO-stub for settings import

Makefile

@@ -10,6 +10,7 @@ build:
 
 clean:
 	rm -rf aleesa-telegram-go
+	rm -rf settings-migrator
 
 upgrade:
 	rm -rf vendor
@@ -17,4 +18,7 @@ upgrade:
 	go mod tidy
 	go mod vendor
 
+migrator:
+	${GOOPTS} go build ${BUILDOPTS} -o settings-migrator ./cmd/settings-migrator
+
 # vim: set ft=make noet ai ts=4 sw=4 sts=4: