Text Display Submit Button Listener

[my-dimons]

Is your feature request related to a problem? Please describe.
I was recently trying to detect when the submit button was pressed in elastic. I tried detecting it by seeing if the current value is not equal to the last read value, but that didn't work when I wanted to submit the same value more than once.

Describe the solution you'd like

• Add listener to network table entry to check when submit button is pressed.

Describe alternatives you've considered

• Call function when submit button is pressed
• Update a SmartDashboard boolean to true when submit button is pressed (Can be manually changed to false and apply logic)