[AR-5926] Move UI related code to Wallet UI source code.

[karthik-durai]

PR

Describe your changes

1. Removed code that created Wallet Bubble/Button.
2. Removed Code that Creates Wallet Iframe structure instead just creating iframe.
3. Set default size of iframe as zero and position to right bottom.
4. Removed code that Show/Hide wallet in Auth SDK.
5. Add two methods to manage Wallet size and position (setIframeStyle and getWalletPosition).

Issue ticket number and link

• AR-5926

Checklist before requesting a review

• You have performed a self-review of your own code
• You are using approved terminology
• Your changes have been tested locally
• Your code builds clean without any errors or warnings

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