Sample determinate LinearProgressIndicator

[chitgoks]

Is your feature request related to a problem? Please describe.
This is not a problem. More of a sample code.

Describe the solution you'd like
Your sample uses a Circle progress indicator. I hope you can also provide a LinearProgressIndicator that will simulate a determinate progress.

Describe alternatives you've considered
Tried to change the widget to linear but it appears beside the message. Would be nice if it is below the message. so an added option will be cool.

[fayaz07]

@chitgoks Sure, I will be working on your request, due to busy schedule I wasn't able to focus on it

[fayaz07]

Please checkout v1.2.2