move submodules and build_fossil_hr_watchface.sh to subdir

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "fossil-hr-watchface"]
-	path = fossil-hr-watchface
+	path = external/fossil-hr-watchface
 	url = https://github.com/arjan-s/fossil-hr-watchface
 [submodule "jerryscript"]
-	path = jerryscript
+	path = external/jerryscript
 	url = https://github.com/jerryscript-project/jerryscript

external/build_fossil_hr_watchface.sh

@@ -10,4 +10,4 @@ $jerry generate -f '' widget_weather.js -o widgetWeather.bin
 $jerry generate -f '' widget_steps.js -o widgetSteps.bin
 $jerry generate -f '' widget_hr.js -o widgetHR.bin
 popd
-mv fossil-hr-watchface/*.bin app/src/main/assets/fossil_hr/
+mv fossil-hr-watchface/*.bin ../app/src/main/assets/fossil_hr/