Stellar Wallet Kit should offer a dropdown UI once wallet is connected

[janewang]

I'm submitting a ... [ ] bug report [x] feature request [ ] question about the decisions made in the repository [ ] question about how to use this project

Summary Similar to Rainbow kit that has a UI once a wallet is connected, the UI shows

• address
• native XLM balance
• Copy address button
• Disconnect button

Before as we are implementing wallet kit on stellar lab, we realized this need:

[raizo07]

@janewang is this open for contributions?

[earrietadev]

A built-in button component with a dropdown is now included in the latest version v1.1.0