Feat: Integrate ubeswap savings widget #619

[Oluwatomilola]

Description

This PR integrates the GoodDollar Savings Widget into GoodDapp as a first-class page.

Changes include:

• Added a new Savings menu item to the sidebar.
• Created a new /savings page using the same layout structure as Bridge/Swap/Claim.
• Embedded the GooddollarSavingsWidget via a dedicated wrapper component.
• Added contextual FAQs for the Savings feature.

This implements the requirements described in issue #619.

About: https://github.com/GoodDollar/GoodProtocolUI/issues/#619
fixes #619 #619

How Has This Been Tested?

Ran the app locally using yarn start.

Navigated to the new Savings route from the sidebar.

Verified that the Savings Widget loads correctly.

Confirmed layout consistency with Bridge/Swap/Claim pages.

Manually tested wallet connection and widget rendering.

Checklist:

• PR title matches follow: (Feature|Bug|Chore) Task Name
• My code follows the style guidelines of this project
• I have followed all the instructions described in the initial task (check Definitions of Done)
• I have performed a self-review of my own code
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have added reference to a related issue in the repository
• I have added a detailed description of the changes proposed in the pull request. I am as descriptive as possible, assisting reviewers as much as possible.
• I have added screenshots related to my pull request (for frontend tasks)
• I have pasted a gif showing the feature.