4. Screen Class challenge

Design a screen class that keeps track of the brightness of all pixels on the 5 by 5 LED display of the microbit.

Initialize the class instance with all pixels at 0 brightness.

Create a method to reset all pixels to 0 brightness.

Create a method to set all pixels to a given brightness.

Create a method to set all pixels to a random brightness.

Create a method to show the screen using the pixel brightness values.

Create a method to set a pixel brightness like the standard set_pixel method: .set_pixel(x, y, value).

Create a method to get a pixel brightness like the standard set_pixel method: .get_pixel(x, y, value).

Create a method to set the pixel brightness for a row.

Create a method to set the pixel brightness for a column.

Create a method to set the pixel brightness for a column.

Create a method to set the pixel brightness for a random pixel.

Create a method to set a random pixel brightness for a given pixel.

Create a method to set a random pixel brightness for a random pixel.

Create a method that returns the number of pixels with brightness greater than 0.

Create a method that returns the number of pixels with brightness greater than a specified value.

Create a method that returns the number of pixels with brightness of a specified value.