Shell + page loading

And:
- some basic stylesheet i found for basic html elements
- a global lua method for navigating pages

CMakeLists.txt

@@ -16,13 +16,21 @@ add_library(lunasvg::lunasvg ALIAS PkgConfig::LUNASVG)
 
 find_package(RmlUi CONFIG REQUIRED)
 
-add_executable(${PROJECT_NAME}
-    src/main.cpp
+add_library(rmlui_backend STATIC
     vendor/rmlui_backend/RmlUi_Backend_GLFW_GL3.cpp
     vendor/rmlui_backend/RmlUi_Platform_GLFW.cpp
     vendor/rmlui_backend/RmlUi_Renderer_GL3.cpp
 )
 
+add_executable(${PROJECT_NAME}
+    src/main.cpp
+    src/app.cpp
+    src/lua_app_api.cpp
+    
+    src/page.cpp
+    src/test_page.cpp
+)
+
 target_include_directories(${PROJECT_NAME} PRIVATE
     src
     vendor/rmlui_backend
@@ -30,6 +38,7 @@ target_include_directories(${PROJECT_NAME} PRIVATE
 )
 
 target_link_libraries(${PROJECT_NAME} PRIVATE
+    rmlui_backend
     RmlUi::RmlUi
     RmlUi::Debugger
     RmlUi::Lua