Maps: Add search panel

Userland/Applications/Maps/SearchPanel.gml

@@ -0,0 +1,63 @@
+@Maps::SearchPanel {
+    min_width: 100
+    preferred_width: 200
+    max_width: 350
+    layout: @GUI::VerticalBoxLayout {
+        spacing: 2
+    }
+
+    @GUI::Frame {
+        frame_style: "SunkenPanel"
+        fixed_height: 28
+        layout: @GUI::HorizontalBoxLayout {
+            margins: [2]
+            spacing: 2
+        }
+
+        @GUI::TextBox {
+            name: "search_textbox"
+            placeholder: "Search a place..."
+        }
+
+        @GUI::Button {
+            name: "search_button"
+            icon_from_path: "/res/icons/16x16/find.png"
+            fixed_width: 24
+        }
+    }
+
+    //  Start, empty and places are toggled in visibility
+    @GUI::Frame {
+        name: "start_container"
+        frame_style: "SunkenPanel"
+        layout: @GUI::VerticalBoxLayout {
+            margins: [4]
+        }
+
+        @GUI::Label {
+            text: "Enter a search query to search for places..."
+            text_alignment: "CenterLeft"
+        }
+    }
+
+    @GUI::Frame {
+        name: "empty_container"
+        frame_style: "SunkenPanel"
+        layout: @GUI::VerticalBoxLayout {
+            margins: [4]
+        }
+
+        @GUI::Label {
+            text: "Can't find any places with the search query"
+            text_alignment: "CenterLeft"
+        }
+    }
+
+    @GUI::ListView {
+        name: "places_list"
+        horizontal_padding: 6
+        vertical_padding: 4
+        should_hide_unnecessary_scrollbars: true
+        alternating_row_colors: false
+    }
+}