Driver for the mlx90640 thermal imaging camera (#578)

Author: cswank

drivers/framework.zig

@@ -45,6 +45,7 @@ pub const led = struct {
 pub const sensor = struct {
     pub const TMP117 = @import("sensor/TMP117.zig").TMP117;
     pub const ICM_20948 = @import("sensor/ICM-20948.zig").ICM_20948;
+    pub const MLX90640 = @import("sensor/MLX90640.zig").MLX90640;
 };
 
 pub const stepper = struct {
@@ -213,6 +214,7 @@ test {
 
     _ = sensor.TMP117;
     _ = sensor.ICM_20948;
+    _ = sensor.MLX90640;
 
     _ = @import("stepper/common.zig");
     _ = stepper.A4988;