chore: Added air quality layout

app/src/main/res/layout/air_quality_item.xml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+
+        <variable
+            name="airQuality"
+            type="com.warbler.data.model.weather.AirQualitySource" />
+    </data>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@android:color/transparent">
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/air_quality_item_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="8dp"
+            android:background="@android:color/transparent"
+            android:padding="4dp"
+            android:textColor="@color/colorPrimaryDark"
+            android:textSize="24sp"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:text="SO2" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/air_quality_item_value"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:layout_marginEnd="8dp"
+            android:background="@drawable/search_bg"
+            android:padding="4dp"
+            android:textColor="@color/colorPrimaryDark"
+            android:textSize="24sp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:text="22.3" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</layout>