refactor-wallet-state

[particle4dev]

General Checklist:

• [x] Tests added for this feature/bug

• [x] All tests are passed

• [x] No lint error

• Review

  • [x] Has been reviewed

• [x] Conform by the [merge request performance guides]

• [x] Conform by the [style guides]

• [x] Squashed related commits together

Tasks Checklist

• [x] Study requirements

• [x] Move withdraw function

• [x] app: add selectors

• [x] app: add saga

• [x] app: add reducer

• [x] app: add actions

• [x] app: add constants

• [x] wallet: remove selectors

• [x] wallet: remove saga

• [x] wallet: remove reducer

• [x] wallet: remove actions

• [x] wallet: remove constants

• [x] ================

• [x] Move balance function

• [x] app: add selectors

• [x] app: add saga

• [x] app: add reducer

• [x] app: add actions

• [x] app: add constants

• [x] wallet: remove selectors

• [x] wallet: remove saga

• [x] wallet: remove reducer

• [x] wallet: remove actions

• [x] wallet: remove constants

• [x] load wallet in buy page

• [x] handle when no asset

What are the relevant issue numbers?

Closes #54