Make sure there's a newline at the end of files

Signed-off-by: Slendi <slendi@socopon.com>

.editorconfig

@@ -6,6 +6,6 @@ end_of_line = lf
 trim_trailing_whitespace = true
 
 [*.{h,c,cpp}]
-insert_final_newline = false
+insert_final_newline = true
 indent_style = tab
 

src/Application.cpp

@@ -119,4 +119,4 @@ auto Application::mouse_captured(bool new_state) -> void
 	m_mouse_captured = new_state;
 }
 
-} // namespace Lunar
+} // namespace Lunar