ChipInput: add keyboard interactions

[satyamyadav]

Summary

Add keyboard interactions in the component.
Add interactions:

• Focus
• Navigation on chips
• Deletion of chips

Note:

• The cancel icon button on right should remove everything from the input.
• If two chips are consecutive, focus can move from one to another.

1. Add the interactions according to the Following table.
   

2. Add the table in doc site in Input component's Interaction tab like: https://design.innovaccer.com/components/combobox/interactions/

Note: In Design the component is Input only so the doc will be added to the Input page and in library the component is ChipInput.

Component code: https://github.com/innovaccer/design-system/tree/master/core/components/molecules/chipInput

Story: https://mds.innovaccer.com/?path=/docs/components-input-chipinput-all--all

Motivation

To provide the keyboard navigation in Inputs for accessibility and consistency across the components.

[saty2103]

@satyamyadav please assign this on my name.

[devansh-m12]

@saty2103 still working on it?
Otherwise @anuradha9712 please assign this to me

[satyamyadav]

@devansh-m12 Assigned this issue to you.