feat(stylesheets): add stylesheet for info bar

src/view/styles/info_bar.css

@@ -0,0 +1,3 @@
+.info_box{
+  background-color: yellow;
+}

src/view/styles/mod.rs

@@ -0,0 +1,19 @@
+use adw::gdk::Display;
+use gtk4 as gtk;
+
+use std::path::Path;
+
+use gtk::{
+    style_context_add_provider_for_display, CssProvider, STYLE_PROVIDER_PRIORITY_APPLICATION,
+};
+
+pub fn load_css() {
+    let style_provider = CssProvider::new();
+    style_provider.load_from_path(Path::new("./src/view/styles/info_bar.css"));
+
+    style_context_add_provider_for_display(
+        &Display::default().expect("Could not connect to a display"),
+        &style_provider,
+        STYLE_PROVIDER_PRIORITY_APPLICATION,
+    );
+}