feat(Countries): Adding countries endpoint

sections/countries/services.js

@@ -0,0 +1,17 @@
+"use strict";
+const { ROOT_PATH, LIB_PATH, MODELS_PATH, HANDLERS_PATH } = process.env;
+const { getPagination , queryPage } = require( `${ROOT_PATH}/${LIB_PATH}/Misc.js` );
+const countriesModel = require( `${ROOT_PATH}/${MODELS_PATH}/countries.model.js` );
+
+const getCountriesList = async(req, res) => {
+    const { page , elements } = getPagination( req.query );
+    const retVal = await queryPage( page , elements, countriesModel );
+    res.send( retVal );
+};
+
+const getCountry = async(req, res) => {
+    const retVal = await countriesModel.findById( req.params.id );
+    res.send( retVal );
+};
+
+module.exports = { getCountriesList , getCountry };