makefile updates with linux and android targets and go mod support

Makefile

@@ -1,7 +1,19 @@
-all:
+.PHONY: linux android
 
-default: all
+default: linux 
+
+all: clean linux android
+
+linux:
+	go mod download
+	qtdeploy build linux | pv
+
+android: 
+	go mod download
+	go mod vendor
+	qtdeploy -docker build android | pv
 
 clean:
+	rm -r vendor || true
 	find -iname "moc*" | xargs rm
 	find -iname "rcc*" | xargs rm