init gettext/i18n localization support

.gitignore

@@ -1 +1,7 @@
 *.o
+*.cache
+*.log
+*.status
+configure
+configure~
+Makefile

README.md

@@ -10,7 +10,7 @@ GTK 4 / C++ implementation branch
 
 ### Linux
 
-* `sudo apt install git libgtkmm-4.0-dev`
+* `sudo apt install git libgtkmm-4.0-dev libglibmm-2.68-dev`
 * `git clone https://github.com/YGGverse/Yoda.git`
 * `cd Yoda`
 * `git checkout master`
@@ -22,11 +22,23 @@ GTK 4 / C++ implementation branch
 * `make clean`
 * `make`
 
+## Localization
+
+### Official
+
+ * [Crowdin](https://crowdin.com/project/yoda-browser)
+
+### Personal
+
+* `sudo apt install intltool`
+* `cd po`
+* `intltool-update --pot`
+
 ## Development
 
 ### Environment
 
-* `pkg-config --cflags --libs gtkmm-4.0`
+* `pkg-config --cflags --libs gtkmm-4.0 glibmm-2.68`
 
 ### Contribution
 

po/.gitignore

@@ -0,0 +1 @@
+*.pot

po/POTFILES.in

@@ -0,0 +1,4 @@
+src/app/browser.cpp
+src/app/browser.h
+src/main.cpp
+src/main.h

src/app/browser.h

@@ -1,6 +1,8 @@
 #ifndef APP_BROWSER_H
 #define APP_BROWSER_H
 
+#include <glibmm/i18n.h>
+
 #include <gtkmm/applicationwindow.h>
 #include <gtkmm/headerbar.h>
 #include <gtkmm/menubutton.h>
@@ -12,7 +14,7 @@ namespace app
     {
         public:
 
-            const Glib::ustring TITLE = "Yoda";
+            const char* TITLE = _("Yoda");
             const int WIDTH = 640;
             const int HEIGHT = 480;
 
@@ -30,7 +32,7 @@ namespace app
                     {
                         public:
 
-                            const Glib::ustring TOOLTIP = "Menu";
+                            const char* TOOLTIP = _("Menu");
 
                             Menu();
                     };
@@ -39,8 +41,8 @@ namespace app
                     {
                         public:
 
-                            const Glib::ustring ICON = "tab-new-symbolic";
+                            const char* ICON = "tab-new-symbolic";
-                            const Glib::ustring TOOLTIP = "New tab";
+                            const char* TOOLTIP = _("New tab");
 
                             Tab();
                     };

src/main.cpp

@@ -4,10 +4,12 @@ int main(
     int argc,
     char* argv[]
 ) {
+    // Init app
     auto app = Gtk::Application::create(
         APPLICATION_ID
     );
 
+    // Launch browser component
     return app->make_window_and_run<app::Browser>(
         argc,
         argv