add support for the go standard embed tag for locale files

_examples/i18n/template-embedded/main_test.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"testing"
+
+	"github.com/kataras/iris/v12/httptest"
+)
+
+func TestI18nLoaderFuncMap(t *testing.T) {
+	app := newApp()
+
+	e := httptest.New(t, app)
+	e.GET("/").Expect().Status(httptest.StatusOK).
+		Body().Equal("Become a MEMBER")
+	e.GET("/title").Expect().Status(httptest.StatusOK).
+		Body().Equal("Account Connections")
+	e.GET("/").WithHeader("Accept-Language", "el").Expect().Status(httptest.StatusOK).
+		Body().Equal("Γίνε ΜΈΛΟΣ")
+	e.GET("/title").WithHeader("Accept-Language", "el").Expect().Status(httptest.StatusOK).
+		Body().Equal("Λογαριασμός Συνδέσεις")
+}