MLX90393 three-axis magnetometer (#2770)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

tests/test3.yaml

@@ -692,6 +692,20 @@ sensor:
     name: 'testwave'
     component_id: 2
     wave_channel_id: 1
+  - platform: mlx90393
+    oversampling: 1
+    filter: 0
+    gain: "3X"
+    x_axis:
+      name: "mlxxaxis"
+    y_axis:
+      name: "mlxyaxis"
+    z_axis:
+      name: "mlxzaxis"
+      resolution: 17BIT
+    temperature:
+      name: "mlxtemp"
+      oversampling: 2
 time:
   - platform: homeassistant