Nice, thanks microdevweb!
Just a small suggestion:
I think the field name "Frame Rate" is misleading. When setting it to 100, the animation
runs very slow (like a frame rate of 10 FPS). When setting it to 10 (because I wanted
a frame rate of 10 FPS), it runs at round about 100 FPS.
Looks like your 'frame rate' is the delay time between frames. 10 FPS = 100ms delay,
and 100 FPS = 10ms delay.
Next thing to add is saving and loading the Animator state, isn't it?

So you could continue to add new sequences later. Maybe save as XML or JSON.
The dialog box 'Copy the code of the clipboard' is too small. I cannot see the example text.
I see:
1) "Enter the Name of sprite (ex:"
2) "Enter the name of Animation (ex:"
I think the title should be "Copy code to clipboard"