[com.google.android.material.textfield.TextInputLayout] Drawable start & end padding

[georgesamirmansour]

Is your feature request related to a problem? Please describe. I need to add padding for start & end icon drawable

Describe the solution you'd like from xml or java

Describe alternatives you've considered using style

Additional context Add any other context or screenshots about the feature request here.

We also happily accept pull requests.